Classical Numismatics Discussion
  Welcome Guest. Please login or register. Please look at the RECENT ADDITIONS and PRICE REDUCTIONS at the top and bottom of the page. All items are guaranteed authentic for eternity! Thanks for supporting Forum with your PURCHASES! Welcome Guest. Please login or register. Point your mouse to a coin in RECENT ADDITIONS or PRICE REDUCTIONS on this page to see the the price. All items are guaranteed authentic for eternity! Thanks for supporting Forum with your PURCHASES!


FORVM`s Classical Numismatics Discussion Board  |  Numismatic and History Discussions  |  Coin Photography, Conservation and Storage  |  Topic: Renovwax? Anti BD? 0 Members and 1 Guest are viewing this topic. « previous next »
Pages: [1] Go Down Print
Author Topic: Renovwax? Anti BD?  (Read 2464 times)
Jerome Holderman
Caesar
****
Offline Offline

Posts: 1650


My name is Jerome, and I am a coinaholic!


« on: March 14, 2005, 04:35:41 am »

An auction I am currently watching contains the following statement.

"This coin has been restoration treated with Renovwax  . The coin is proofed against future bronze disease corrosion even if stored in less than suitable conditions . Therefore an unconditional  25 year money back guarantee is given plus a lifetimes guarantee of authenticity .

 If more details are required about the Renovwax anti bronze disease treatment then please contact me . You can be assured that this coin is totally free from damaging bronze disease and will remain so in the future ."

Anyone heard of this Renovwax? Is it really supposed to be a treatment against BD? Sounds interesting.    

Logged

Federico M
Consul
***
Offline Offline

Posts: 360



« Reply #1 on: March 14, 2005, 01:59:21 pm »

I never heard about this brand of wax (but I'm not at all an expert in the field), but I suppose that any wax can be considered a preventive tratement against BD, since the reaction creating BD cannot develop in absence of air or humidity, so if you "seal" a coin, it is BD proof (as long as it stay sealed)...
Imho, this specific statement looks a bit hyperbolic (and this is not so rare in EBay or similar auctions), but you can always "contact him" to ask for some more details, as he suggested Wink
Logged
Jerome Holderman
Caesar
****
Offline Offline

Posts: 1650


My name is Jerome, and I am a coinaholic!


« Reply #2 on: March 14, 2005, 02:13:35 pm »

you can always "contact him" to ask for some more details, as he suggested Wink

Already done, I will post any reply I get here.
Logged

maridvnvm
Tribunus Plebis Perpetuus
Procurator Monetae
Caesar
*****
Offline Offline

Posts: 4190



« Reply #3 on: March 14, 2005, 02:43:26 pm »

I guess he could just have used Renaissance Wax (Often called Ren Wax) and made his description overly-flowery.
Regards,
Martin
Logged
Federico M
Consul
***
Offline Offline

Posts: 360



« Reply #4 on: March 14, 2005, 03:03:26 pm »

Maybe... "overstating" "Ren Wax" may create "Ren-ov-wax" Wink but the name looks like a brand "renov" (like in "renovation") plus "wax"... maybe it exists...
Logged
Jerome Holderman
Caesar
****
Offline Offline

Posts: 1650


My name is Jerome, and I am a coinaholic!


« Reply #5 on: March 14, 2005, 07:15:52 pm »

Here is the sellers reply.

"Hi , the Renovwax process is basically a scaled down version of the method the British Museum and I believe many other museum conservation departments use to stabilise and protect from corrosion bronze sculpture and artefacts. I used to work for the Museum and am able to source their lab suppliers so that I can treat my own coins . I live in a relatively damp riverside valley so Bronze disease prevention is a must for me .
 I can give coins a basic anti  corrosion treatment which , as the materials have been in use for conservation since the 80's and are still 'working' then a 25 year guarantee can be given . This can be done for a basic fee of  £5 per coin . I can also (up to a point ) make a good job of  repairing  old bronze disease damage to make a coin saleable though this is very time consuming and will probably only be worthwhile for the higher value coins . All the best *****"
Logged

whitetd49
Procurator Caesaris
Caesar
****
Offline Offline

Posts: 1561


FEL TEMP REPARATIO


WWW
« Reply #6 on: March 14, 2005, 07:32:16 pm »

I really suspect that the process referred to is that they leach all the water out of the coin with absolute ethanol, dry it, and then coat it with ordinary wax to keep moisture from the coin which could restart the corrosion process.
Logged

If you watch long enough, even a treefrog is interesting.  Umberto Eco
http://www.forumancientcoins.com/gallery/index.php?cat=10349
cscoppa
Procurator Caesaris
Caesar
****
Offline Offline

Posts: 574


It's off to the races!!!!!!!!!


« Reply #7 on: March 14, 2005, 08:17:18 pm »

Is this Renovwax a bad rendering of Ren Wax. It sounds like it in the reply e-mail...... even down to talk about the BM. Which BTW Curtis has told us does not use any wax on their coins...........
Logged

Chip

PECVNIAE IMPERARE OPORTET NON SERVIRE
Money should be mastered, not served.
http://www.forumancientcoins.com/gallery/thumbnails.php?album=12
bruce61813
Guest
« Reply #8 on: April 08, 2005, 01:16:12 pm »

I think this mwethod is not a bad rendering of REN Wax. I have heard bits about the process, bu have not seen anything. I appears that the coins are soaked in a liquid [as in heated wax] mis that has some other chemicals, for about a week, than removed and cooled. the rxcess wax is removed. As I said, I have seen not examples of this process, or results.

Bruce
Logged
moneta66
Guest
« Reply #9 on: April 09, 2005, 12:21:51 pm »

Hi Friends the wax, this is a fact, can't remove o preserve a coin from  BD.
The wax can protect the last layer from the humidity and other dangerous chemical for the coin.
About the treatment if you win the coin post a picture of it. There are severals of that and each depends of the layer/patina coating the natural bare metal of the coin.
A coin  just waxed, without the right process, able to fix the BD will be a softy sandwich in less than 3 years.
A special wax is manufactured by melting the correct formula and the chemicals for the BD, but is not used for the coin.
About the warranty for  the BD....is possible.

Hi MAX

Here a original coin with BD , eradicate by chemical, artificial patina (GREEN BETTER THAN NATURAL), with wax

http://www.forumancientcoins.com/fakes/displayimage.php?p=493
Logged
William J Bligh
Guest
« Reply #10 on: April 10, 2005, 09:07:45 pm »

I won a coin off said seller, and was extremely pleased with it, save the 'Renovwax', which lent an unappealing look to the coin. I removed said 'renovwax' as an undesirable element and was left with a very nice coin. Can't say I like the stuff, but I got a heck of a deal on the coin - It seems other people didn't care much for the waxy appearance in the picture either.

Logged
His Star
Guest
« Reply #11 on: September 07, 2006, 04:32:07 pm »

When I wrote the British Museum, they told me they don't put anything on their coins:

Quote
We do not coat our coins in anything, but prefer to leave a natural patina.
Coins on display or with potential conservation requirements are always refered to our Conservation laboratories for specialist treatment:
http://www.thebritishmuseum.ac.uk/conservation/index.html
For further advice on Conservation and protection of coins see advice online:
http://www.finds.org.uk/conservation/
 
Regards,
 
Ian Leins
Curator of Iron Age and Roman coins
Department of Coins and Medals
The British Museum
 


Logged
bruce61813
Guest
« Reply #12 on: September 13, 2006, 11:28:16 am »

The British Museum would not need to coat their coins with anything - Fisrst the coins have already undergone extensive conservation and any stabilisation , if it were needed.
They are also storged under more controlled conditions than the regular collector.
  The renovwax method was tried and discussed in another group I belong too. It basically takes a cleaned and conserved coin, immerses it in a hot melted wax for several hours [read a day or two] until the very liquid wax can saturate the coins crevasses, then the coin is removed and the excess wax wiped off. If the BD is not fully neutralized first, any moisture that may work its way through the wax, will re-activaste the chemical reaction, wich will continue un der the wax layer, so nothing would be gained.

  I do use renwax, especially on 19th and 20th century medallions, it does not effectthe visable patina, but will remove finger oils, and minor oxidation on the surface. this has the advantage of leaving the basic coloring [patina] in tact, but removes the harmful surface contaminents. I also like the ring fitted Air-tite containers, as they keep thing from sliding & banging around and being worn [often call "coin cabinet" patina], and they are easily opened if I need to re-scan the item.

Bruce
Logged
Pages: [1] Go Up Print 
FORVM`s Classical Numismatics Discussion Board  |  Numismatic and History Discussions  |  Coin Photography, Conservation and Storage  |  Topic: Renovwax? Anti BD? « previous next »
Jump to:  

Recent Price Reductions in Forum's Shop


Powered by MySQL Powered by PHP Powered by SMF 1.1.21 | SMF © 2015, Simple Machines Valid XHTML 1.0! Valid CSS!
Page created in 0.82 seconds with 46 queries.
zoom.asp