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Author Topic: What percentage are fake? Some musings and questions for collectors and dealers  (Read 5241 times)

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Lloyd Taylor

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Its easy to form a view, based on discussion boards, that the world of ancient numismatics is awash with fakes. Dealers counter that this is not the case. Yet little by way of statistical substantiation of either position is forthcoming. The old maxim of buying from a reputable source/dealer is the best way of mitigating the risk, but to what extent? The recently documented examples of multiple fakes listed and sold in the UBS auction (Fakes Sold at an Auction posted by Ilya Prokopov) raises the question as to what extent the risk of purchasing a fake is mitigated by recourse to a reputable source.

Personal experience in assembling a collection of 250 ancients (mostly Greek) over twenty years leads me to suggest the following quantification of the fake percentages of coins offered by source:

1) Reputable dealer: 0.1% to 1.0% (i.e. one coin in one thousand to one in one hundred prove unauthentic)
2) UBS Gold&Numismatic, Auction 77 (9 September 2008) : 0.25% plus ( i.e. minimum identified 15+ fake coins in 6400 lots)
3) eBay generally:  10% to 30%
4) Forum listed E-Bay dealer in fakes: 90% to 100%
5) Vendor at any ancient tourist site:   100%

To put these percentages in perspective, and to provide a reality check, I note that [REMOVED BY ADMIN] currently lists about 83,000 coins on its website, meaning that somewhere between 83 to 830 might prove to be fake in the final analysis.  The lower figure in the range is probably a bit conservative given the experiences recently document on the discussion board and some might argue that the upper bound of the range is conservative based on visual screening of the offerings. However, I feel the percentage range noted expresses the likelihood reasonably well, without impugning anyone's integrity; fakes are a reality and the percentages are finite although difficult to quantify in a dispersed market.  If there is better quantified data to feed into this consideration, then I'd be grateful to receive it.

This list of percentages begs the question as to why collectors repeatedly chance it with eBay, like "moths to a flame" and then seek the advice of the discussion board as to authenticity of some pretty dubious, frequently "too good to be true" offerings.  Why?   The answer probably goes to the heart of human nature. Perhaps like most of us they feel they can beat the odds, even playing Russian Roulette with three of six chambers loaded?  Of course it may be that my assessment of the percentages is wrong, but if so why all the angst and energy devoted to the subject?

So we come back to the old maxim of buying from a reputable dealer, for which we pay a premium; the premium being in part for risk mitigation against the purchase of a fake. This premium takes account of the time and effort of the dealer in screening out fakes prior to wholesale purchase for inventory, plus the loss of finding a fake in the inventory and withdrawing it from sale. So even though we collectors do not (hopefully) purchase fakes on a large scale, we pay the fakers indirectly for their product due to the cost of vigilance exerted by reputable dealers, or alternatively we play Russian Roulette on eBay and pay the fakers directly for their effort.  

This begs two questions:
1) What percentage of coins come across dealers' counters by way of wholesale trade and are rejected in the wholesale purchase decision due to dubious authenticity?
2)  What average percentage of dealer inventory is then withdrawn as fake at a later date?

I suspect the answer to the first is a significant number, and hopefully the answer to the second is very small? Maybe some of the dealers on the Board can share their experience on the matter?

Clearly some coin series are more frequently targeted by the fakers that others; perversely leading to the outcome that people continue to pursue these items by virtue of the popularity of the series in question, which is what attracts the faker in the first place; e.g. the Apollonia and Mesembria diobols of the "Black Sea Hoard" which figure frequently as the subject fro authentification on the board.  Again I ask; as a collector, why try and beat the odds on these issues targeted by fakers by chasing eBay deals?

It would be useful to list the most targeted coin issues for fakery, with quantification of the extent of fakery (the percentages) accompanied by the clear message to (novice) collectors that they pursue these coin issues from less than reputable sources at their peril.

I suggest that reputable dealers have a role in educating their clientele of the the underlying statistics of fakery and the associated risks with specific issues which would enhance the confidence of collectors in purchasing from them, while at the same time shutting the door on some of the avenues that the fakers use to access the numismatic market.  

How about it?

Offline Steve Minnoch

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No offence intended, but this is rather pointless - making up a statistic and using it to generate another made-up statistic!

Steve

Offline SVLLAIMP

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I would actually be quite curious as to what a dealer would have to say about this.

Lloyd Taylor

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Better to be vaguely right than precisely wrong. 

The low level percentages are in ranges expressing the uncertainty attached to my knowledge and are as I note are based on personal experience over twenty years. The invitation is there to those with a better basis of experience (i.e. the dealers) to correct any error in the ranges based on factual data which they will have accumulated in their numismatic business dealings.  The invitation is also there to address the broader issues raised. 

Let's hope the silence is not deafening on this subject, nor is it dismissed with glib one liners. To do so would only raise suspicion in the minds of serious collectors.


Offline Ibex-coins

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When you state:"Let's hope the silence is not deafening on this subject" you have to remember that sometimes the deafening silence is due to a lack of interest.  This subject comes up fairly frequently and not everybody has the energy to compose well crafted response each and everytime we go over the same ground.  Sometimes the silence is because no one  has anything new to say, its not they are trying to put their head in the sand, or that dealers have a secret society that prevents  them from talking about fakes and such.
Ronn

Offline Obryzum

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<<Clearly some coin series are more frequently targeted by the fakers that others>>

I think this is a big reason why it is so hard to comment.  The size of the problem really depends on which niche of the market we are talking about. 

There is only one long term solution that will both turn the tide and help everyone quantify the scope of the problem:  There needs to be one giant online database where every ancient coin that has ever been made can be catalogued and registered.  Such a database would make it possible to trace the provenance of every coin from now on.  With the right software, all the coins of a particular type could be "fingerprinted" and the system could search for die matches, which would put counterfeiters on the defensive once and for all. 

Right now we are not making full use of the available technology.  Auction houses spend a lot of money producing beautiful catalogues -- and those catalogues are great for purposes of establishing the provenance of a few coins -- but without digitizing the system we all need to rely on people like Cliff who have a photographic memory (and their own personal databases of images).  Reputable dealers who sell coins generally don't produce the nice glossy catalogues.  Wildwinds and coinarchives are a great step in the right direction, but the next major advance will be using computers to search for die matches . . . .  Until we cross that bridge we will always be on the defensive IMO.  And it will remain very difficult to quantify the problem.

Offline Ibex-coins

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"Auction houses spend a lot of money producing beautiful catalogues -- and those catalogues are great for purposes of establishing the provenance of a few coins"  In the antiquities industry in the 1990's and early 2000's many looters and forgers used auction houses to establish the provenance of an object.

Here's a quick example of how  it works, we will use  a looted object for this example.  I dig up  an object and bring it to my favorite big fish dealer he gives me $100 for the object (I am poor in a small village and $100 is alot for me).  He places the object in a sotheby's catalogue.  He  may place a very high reserve on the object, say he wants $1500 for the object.  Now the object may only be worth $800 on the open  market.  The dealer can do one of two things now.  One let it not sell and still establish that the provenance of being listed in the Sotheby's Oct 2008 auction, or he can be even more clever.  He can buy it himself for $1500.  He is only out his 10-15% commission to the auction house, but now he  has established a price for such a lovely, rare object.  He has paid $250 of investment into this object.  He then takes it to another auction house 6 months later.  He now has established a provenance as being in Sotheby's Oct 2008 auction, and he has established  a false market worth of the object, cause it went for $1500 in October.  A new buy may think he is getting a bargain if he pays  $1200 for the object at Auction.  So our dealer has made $950 profit on his $250 investment.

Offline ROMA

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You make some observations from personal experience, which is fine, but then you state “that [REMOVED BY ADMIN] currently lists about 83,000 coins on its website, meaning that somewhere between 83 to 830 might prove to be fake in the final analysis.” By what means of statistical analysis did you arrive at this figure? You offer a prediction, but in statistics predictions are made based on real data.
You state that “the percentage range noted expresses the likelihood reasonably well,” and you base this on a “visual screening” of the offerings. This is statistical misuse. Its one thing to state your concern about fakes.but stating that [REMOVED BY ADMIN] has hundreds of fakes without and data to corroborate is irresponsible. Take a random sampling, have experts look at the coins, then you can back it up.
Adversus solem ne loquitor

Offline slokind

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Are we all getting infected by the bug that makes 'news' out of polls?  In the last analysis, what we want is to find authentic coins that interest us: particular coins.  I mean, like every woman knows that over 35 the risk of certain diseases and tragic pregnancies increases by, say (I didn't check), 200%, which only means that if five years earlier the chances were 3 in a million they now are 12 in a million, or maybe 20 if you have a County Nurse/Midwife instead of a doctor.  Each of us for the coins that concern us particularly knows those better than a seller probably does.  Even if my arithmetic is wrong, my reasoning, I think, is right.
Pat L.

Offline ROMA

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I, like a lotta folks here, buy coins one at a time. I buy coins I'm familiar with, and only purchase coins I have a good photo of. I do not feel that its a "moths to a flame" situation when I buy coins off of ebay (infact most of the coins I own are from ebay and they all had been posted in my gallery for months and not once had anyone suspected a fake). Truth is I really wouldn't care if everyone agreed that half the coins on ebay are fakes, I will trust my judgement and go from there. So no I don't this stuff seriously all i was saying is if your gonna say [REMOVED BY ADMIN] might have 800 fake coins you should really have some data to back that up
Adversus solem ne loquitor

Offline commodus

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I am reminded of a famous, even iconic, phrase:
http://en.wikipedia.org/wiki/Statistical_deception
Eric Brock (1966 - 2011)

Offline Obryzum

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The effects on the real marketplace in a few years will be devestating.

We need to think ahead not a few years but a few decades!  Or centuries.

Yes, catalogs are unreliable.  Yes, unscrupulous people get coins into catalogues to establish a fraudulent provenance.  Nothing is certain and there will always be risk.  But imagine how easy it would be to pull off a fraud if there were no catalogs, if there were no online databases of coins to form any basis for comparison.

I predict that in a century or two the technology for counterfeiting will be so sophisticated that nobody will pay good money for a coin without proof that the coin has been around for a long long time.  That proof -- whether it be an old catalog or an online database with a reliable date stamp -- is never going to be conclusive, but it will be an important factor to consider.

Al things being equal, I would be more comfortable buying a coin that was photographed 100 years ago (and that I can be certain existed 100 years ago) than a coin with a completely unknown provenance.  Both may be fakes, of course, but all things being equal, I would feel better about buying a coin that has been around for 100 years and has never been condemned as a fake

Offline slokind

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As Joe Gavignano said.  Also, besides, there have been times when the supply of coins (even apart from world wars!) has been meager and others when it has been abundant.  Within each of these circumstances, at some times certain coins have been more abundant and other times when other groups were.  Each of these (and other) concatenations of circumstances is conducive to different kinds of mischief--also to different forms of mercantile nobility.  This is just one more reason why generalization may be a waste of time.
Pat L.

Offline Bacchus

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Quote from: Obryzum on October 31, 2008, 01:23:25 am


I predict that in a century or two the technology for counterfeiting will be so sophisticated that nobody will pay good money for a coin without proof that the coin has been around for a long long time.  That proof -- whether it be an old catalog or an online database with a reliable date stamp -- is never going to be conclusive, but it will be an important factor to consider.


That is the Celator's last months editorial discussion

Lloyd Taylor

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Thanks for the responses and feedback which has shed a bit of light on some of the questions raised and the trends that will determine where the numismatics hobby ends up.

It seems that most agree with the rank order of the exposure to fakery by source/vendor, if not the assessment of the specific risks expressed as a percentage. I'll come back to this later, but for the moment I simply note that no-one has taken up the invitation to present a more quantified assessment based on a broader base of experience in numismatic business dealings.  This suggests that the stats presented are either "on the money" or even conservative. If otherwise, I'm sure we'd have received quantified evidence to the contrary from the dealer community to demonstrate the case.

On the matter of the response of numismatic industry stakholders to the problem of fakery and associated fraud, there seems little enthusiasm for the view that the dealer community could do more to help itself and its clientele by open discussion of the risks and educating the collector community, in a quantified manner, that the risks of purchasing fakes are dramatically mitigated by dealing with reputable dealers. In doing so, effectively encouraging people to avoid the EBay, they would deprive fakers of an easy and prolific route into the numismatic market.  The central tenet is that the market dynamic can be change if behaviors are changed via education based on the facts.  However, the fear that even acknowledging the extent of the issue will drive away collectors seems to be the overriding concern with this approach and hence the silence on the factual base from which collectors can make an informed decision on the risks attached to various alternative sources.

Rather than seeking a behavioral response to the problem, the fall back is to the hope of development of massive numismatic database technology dependent on the advance of image processing and recognition  software.  Theoretically possible, but in all likelihood some way down the track.  In the the interim, the fallback is for the dealer community to encourage enthusiastic amateurs, via sites like the Forum discussion Board, to tackle the issue on coin by coin, transaction by transaction basis.  This provides useful reference material, but is not the panacea some seem to think.  The fakers are minting faster than the amateurs can identify, as evidenced by some of the recent posts on this Board regarding Serdiko.  Not only that, the quality of the high end fakes is advancing so rapidly that I suspect that visual/photographic analysis will soon be insufficient for authentification.

At the lower end of the market the explosion of low end fakes is mind boggling with the primary conduit to market being EBay.  aj notes the attitude of the dealer community to this arena; seemingly a blind eye.  Yet Wayne Sayles clearly spelled out the problem in his 2001 book Classical Deception...."Today there is an even more distasteful scenario.  The mass production of modern copies of ancient coins in eastern Europe.has inspired some unscrupulous sellers to market these pieces as authentic, or at the least "uncertain" as to authenticity.....As in every age before us, collectors today suffer the retributions of greed.  The forger preys not only on the the ignorant and naive, but on the fact that some collectors will through caution to the wind if they stand to catch a bargain or or obtain elusive rarity."   Sounds like a plea for education and behavioral change rather than a technical solution to me.

As for why in the face of the risks many of us willingly populate the EBay stores the answer was provided in a couple of responses that skill and knowledge enables us to beat the odds, even if 50% are fakes.  Well I won't seek to get between the barrel and the head of those playing Russian Roulette with three chambers loaded!  I simply observe that casinos are loaded with people of similar view; yet I've never seen a casino go broke!  Good luck guys and gals with this approach!  In any event, it does nothing to address the issue of the explosion in fakery and I was not casting aspersions on those who pursue EBay coin deals, rather simply asking what it makes it so compelling for some?

Back to the proposed technical solution (the massive numismatic database), the dimensions of the achieving such are highlighted by the fact that estimates of surviving ancient coins are in the range 25-250 million.  Quite a cataloging task, which will keep all the munchkins in the world busy forever in the absence of a massive technical breakthrough.  Nevertheless, a very well credentialed and resourced organization under the auspices of the European Commission is working to this end and I wish them well in the endeavor. Those that are interested should review the official website of Coins- Combat Illegal Numismatic Sales http://www.coins-project.eu/index.php?option=com_content&view=article&id=29&Itemid=47  (My thanks to the marvelous blog of Ed Snible "A Gift for Polydektes" for drawing my attention to this effort).  Interestingly no dealers or numismatic bodies figure amongst the participants and sponsors of this effort.  Rather technology providers, institutions of learning and legal agencies, which to me speaks eloquently of of the relative priorities of the numismatic community.

So where does this leave the direction of numismatics as a hobby; hopelessly compromised pending a technology breakthrough? The emphasis on the increasing importance of provenance has been highlighted in some of the responses and is inevitable.  Personally, it now underpins a lot of the purchase decisions I make on additions to my collection, even though this approach has pitfalls, which I have experienced as noted below.

The most contentious and apparently misunderstood part of my initial post relates to the statement "To put these percentages in perspective, and to provide a reality check, I note that [REMOVED BY ADMIN] currently lists about 83,000 coins on its website, meaning that somewhere between 83 to 830 might prove to be fake in the final analysis. ...." Some have misunderstood, or chosen to misrepresent, this as being the basis for my assessment that .... "Personal experience in assembling a collection of 250 ancients (mostly Greek) over twenty years leads me to suggest the following quantification of the fake percentages of coins offered by source:1) Reputable dealer: 0.1% to 1.0% (i.e. one coin in one thousand to one in one hundred prove unauthentic)". It may be a sad reflection on my less than Shakespearean prose, or alternatively the loss of reading and comprehension skills in the age of electronic media and sound bite attention spans that has led to this (let's not debate the alternatives please) but whatever the reason I provide a more fulsome explanation.

My personal experience on which the percentage fakes in reputable dealers inventories come from inspecting thousands of coins in European dealers' trays, largely in pre-internet days. In my largely Greek collection of over 250 coins assembled over twenty years I have two probable fakes.  The fakes were sourced unknowingly in the last twelve months via the internet form two very reputable [REMOVED BY ADMIN] coins dealers, ex-old collections. They were only identified by me as fakes after some considerable time via reference to a rather comprehensive library that established one of the coins to be absolutely identical to a museum specimen and the other to have been impossibly sourced from a 1974 hoard.  Probable high end fakes, that have appeared in the market place only once to my knowledge and thus no photo match to known fake dies.  This experience is the basis of my assessment of the risk to lie between 0.1%-1%.  I sought to numerically quantify this risk via reference to something with which most readers of the fakes Board would be familiar; [REMOVED BY ADMIN]...thus the statement ..."meaning that somewhere between 83 to 830 might prove to be fake in the final analysis."   This is a conclusion of the suggested range of possible fakes in reputable dealers inventory, not the source of the statistics!  Now I don't consider these sort of numbers to be unduly concerning in a total inventory of 83,000.  In fact it is testament to the diligence of reputable vendors in screening out fakes.  I can also point to 36 fake specimens identified as sourced from [REMOVED BY ADMIN] dealers across the Forum Fake Board, Forgery Network and CFDL. Add to this my two coins and we have 38 recent examples sourced from [REMOVED BY ADMIN].  And these are the "known unauthentics" to which there must be added the as yet "unknown unauthentics".   I suggest that the numbers are consistent with the personal experience that reputable dealers inventories can be expected to contain some fake material, notwithstanding the best efforts and intentions of all involved and that this material may range 0.1%-1.0% of the inventory.  Add to this the documented (on this Board) experience of the UNS auction with 0.25% fakes in 6,000 lots.  Again consistent with personal experience and assessed risk of fakes in the inventory of reputable dealers!  You don't have to believe it, but if you don't then please give us a better statistical base, built on the numismatic dealings of the dealers who have to address and mitigate the fake risk on a daily basis.

Time to wind up this very lengthy post.

Thanks for your time and patience, good luck with "dodging the bullets" and lets hope the European Commission makes some inroads with its technological program to address numismatic fraud, because the dealer network appears to be too fearful (or greedy) to seriously tackle the issue using the data and network it has in place.  

Offline wandigeaux (1940 - 2010)

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I have never really quite understood the fixation with fakes.  Perhaps Mr. Lloyd T should spend a little quiet time in a dark room ... and contemplate the actual meaning of the word "fulsome!"  George Spradling
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aj

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Some years ago I did a lecture called "No Brand to Protect".

I would like to spend some time updating a number of points for this discussion.

Lloyd Taylor

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Dear Mr. Spradling,

To each his own.  But it causes me to ask why you bother to read the Fakes Board.  Perhaps to develop the understanding you admit to lacking?

As for fulsome you obviously found the matter "offensive to good taste" as opposed to one of its other and original meaning that of "encompassing all aspect; comprehensive". 

Refer to a dictionary and you'll find the word fulsome has several meanings which in the nature of English rely on context for determination of the correct intent.  Troublesome no doubt to those who see the world in black and white or are overly pedantic to the point of anal retentiveness?

Refer to the following from Dictionary.com for those who like to argue semantics rather than the issues.

"Fulsome —Usage note: In the 13th century when it was first used, fulsome meant simply “abundant or copious.” It later developed additional senses of “offensive, gross” and “disgusting, sickening,” probably by association with foul, and still later a sense of excessiveness: a fulsome disease; a fulsome meal, replete with too much of everything. For some centuries fulsome was used exclusively, or nearly so, with these unfavorable meanings.Today, both fulsome and fulsomely are also used in senses closer to the original one: The sparse language of the new Prayer Book contrasts with the fulsome language of Cranmer's Book of Common Prayer. Later they discussed the topic more fulsomely. These uses are often criticized on the grounds that fulsome must always retain its connotations of “excessive” or “offensive.” The common phrase fulsome praise is thus sometimes ambiguous in modern use."
Dictionary.com Unabridged (v 1.1)
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2006.

I really struggle as to why any mention or attempt to achieve objective discussion of the matter of numismatic fakes and associated fraud elicits such a negative response amongst an appreciable segment of the numismatic fraternity, to the extent that the fraternity seems to transpose into warring factions? Fear, greed, or denial, but certainly not glory appear to be the motivators in this matter!

Have fun, enjoy your hobby and don't get overly pedantic or serious.

Regards
Mr. Lloyd T.

Lloyd Taylor

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aj - I'd welcome the opportunity to read further of your views and engage in further discussion and consideration of the matters raised. 

Offline Heliodromus

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I really struggle as to why any mention or attempt to achieve objective discussion of the matter of numismatic fakes and associated fraud elicits such a negative response amongst an appreciable segment of the numismatic fraternity

I'm a collector, and was originally going to reply to your initial post, then changed my mind and decided not to, and the reason was specifically because you don't present an objective argument. You cite 20 years of collecting greek coins, mainly bought from professional dealers, as the basis of your expertise on fakes, then somehow feel that makes you qualified to claim that 10-30% of eBay coins are fake. I fail to see the correlation with your experience, nor do you back it up with any facts, objective or otherwise. One of the largest single categories of coins sold on eBay are the cheap late roman bronze that I collect, and in that area at least your 10-30% guess is off by at least an order of magnitude, probably more (if you want to dispute that, I suggest you take some random sample - last 100 coins listed say - and show me the 10-30 fakes you believe to be there). I'd also be amazed if the level of fakes among a category such as denarii is anywhere the 10-30% level you suggest - care to offer any objective data that it is in that ballpark? If you acknowledge that the incidence of fakes among some voluminous areas such as LRB is very low, then for your across the board average of 10-30% to hold true, there would have to be some equally numerous offsetting categories (not just some niche like Apollonia Pontika fractions) where the averages are very significantly higher that your claimed 10-30% across-the-board averages? Would you like to suggest a single such area where that is in fact the case, better yet back it up with some objective data?

Similarly, you take one recent auction, UBS 77, that appears to have had an unusually high number of fakes in it (this is why attention was drawn to it!) and seem to want to present that as meaningful as to the overall picture of the prevalence of fakes... Where's the objectivity in highlighting that one auction? Where's the data to back up the implicit assertion that this particular auction is is anyways typical (maybe it is, maybe it isn't, but where are your statistics, your objectivity?).

At the beginning of this thread, another poster commented on your application of your fake percentage guesses to the prevelance of fakes on [REMOVED BY ADMIN]. You seem to have missed the point. One might as well guess that 30% of the population is clinically insane then use that (objectively lacking) statistic to - garbage in, garbage out - raise an alarm about how many posters on FORM must be off their rockers! The secondary statistic is meaningless, since it was derived from a primary one that is unsupported,

As far as eBay, you seem to think that the collector/dealer community is turning a blind eye to the fakes being sold there, and profess amazement at why anyone would buy there... Have you spent much time reading the dealer dominated Moneta-L list where putdowns of eBay for this precise reason are one of the staple topics of conversation? Have you spent much time reading the FORVM discussion boards where our host, Joe, a professional coin dealer, often notes the advantage of buying from dealers - preferably FORVM - and using their expertise and guarantees as protection against fakes? Are you genuinely so surprised and/or ignorant of the reasons people buy from eBay? Price and opportunity (fresh to market material that hasn't been through too many, if any, expert hands) are probably the main ones, not to mention the fun of buying from a flea market where you don't know what gems may lie hidden, misdescribed and poorly photographed among the masses of junk!

Ben

Offline Robert_Brenchley

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I think there are some terrible generalisations about the numbers of fakes around. If you're talking about, say, Roman gold, then obviously eBay is going to be a minefield. With the high quality fakes being produced now, I'd say that anyone who buys them there would do better to invest in Zimbabwean currency. If you take another field - say Judeans - then there are a very few fakes about, and 99.9% of the coins are OK. If you want to be sure, then either stick to FORVM, [REMOVED BY ADMIN] and the like, or learn your field. Any collector will get far more out of the hobby by doing the latter, and judging the coins for themselves. But what worries me about the generalisations is that, at least by implication, they're slandering a lot of perfectly honest sellers.
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Offline ROMA

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Lots of excessive wordy writing there...
Wont spend anytime correcting you on that but I would like to briefly respond to what you wrote in response to my post...
"Well I won't seek to get between the barrel and the head of those playing Russian Roulette with three chambers loaded!  I simply observe that casinos are loaded with people of similar view; yet I've never seen a casino go broke!  Good luck guys and gals with this approach!  In any event, it does nothing to address the issue of the explosion in fakery and I was not casting aspersions on those who pursue EBay coin deals, rather simply asking what it makes it so compelling for some?"

You have equated anyone purchasing coins off of ebay as some sort of greed stricken adrenaline junky. I won’t make this long, I know that Joe has made clear that talking about ebay is for someplace else. First and foremost, reputable dealers do actually use ebay. Even dealers who put out those neat catalog auctions will use ebay. I only buy coins off of ebay from reputable trusted sellers, 'nuf said.
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Offline Obryzum

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Back to the proposed technical solution (the massive numismatic database), the dimensions of the achieving such are highlighted by the fact that estimates of surviving ancient coins are in the range 25-250 million.  Quite a cataloging task, which will keep all the munchkins in the world busy forever in the absence of a massive technical breakthrough. 

The task is not as big as it may seem.  If you think about it, we have from now until the end of history to complete it.  For that reason I say that a database is not a question of if, but when.  And it would not be necessary to catalog every coin -- in the beginning people would naturally give priority to coins with higher numismatic value.

As far as why the numismatic community has been slow to respond:  I do not think there is any conspiracy.  Rather, I think that the big auction houses and top firms remain confident of their ability to spot fakes.   As long as they remain confident, there will not be a consensus that we need a coordinated effort to go on the offensive. 

Offline ROMA

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"Rather, I think that the big auction houses and top firms remain confident of their ability to spot fakes." -well put Obryzum.
Ancient coin collectors do not exist in a vacuum. Every collectables market has to confront the consequences of technological advancement. I really don't get worked up about this...I've collected sports memoribila, autographs, and ninetenth century paper money. I've noticed that this happens regardless of what you collect. Heck you think coins are bad? Try collecting autographs  :laugh: And for those that are worried about counterfeits hundreds of years from now, chalk that one up in the not your problem category! Seriously we can't even speculate on that, and the celator wasted a page of space when they did so imo. Who knows what technology will be available in a hundred or two hundred years, its just plain silly to speculate. Just imagine living in 1808 and you'll see my point.
Adversus solem ne loquitor

Offline Joe Sermarini

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As the number of die studies grow, it will be increasingly difficult to pass fakes that are not made from genuine coins. 

As we increase our knowledge of the various alloys used and impurities typical for each mint, period and type, it will be increasingly more complicated to make fakes with the correct flan composition. 

I am also confident that in a hundred or two hundred years there will be laboratory tests to authenticate ancient coins.  We know silver crystallizes over time.  Surely there are changes in all metals when they are melted and struck that fix them in some way and then at the atomic structure level they change very slowly over time.  We already know how to age test many other substances.  It is only a matter of time until we can test metals and coins. 
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