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FORVM`s Classical Numismatics Discussion Board  |  Numism  |  Reading For the Advanced Collector  |  Topic: Weights, Diameters and Composition of Ancient Coins 0 Members and 1 Guest are viewing this topic. « previous next »
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Author Topic: Weights, Diameters and Composition of Ancient Coins  (Read 11388 times)
Joe Sermarini
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« on: February 22, 2003, 09:01:34 pm »

There isn't any one place to find the weight, diameter and composition of all the various types of ancient coins.  These facts are often buried throughout references.  When you come across this type of information, please post it here.  
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« Reply #1 on: February 28, 2003, 08:18:03 am »

I've just got a copy on an ANS book, 'Chemical Composition of Parthian Coins', Earle R. Caley, 1955. There's far too much info in there to ry to post it all, I might post some of the most important bits. Meanwhile if anyone's got any queries, ask away.
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« Reply #2 on: March 04, 2003, 04:27:14 am »

Throw a rule of weights out and measures in the Roman coins are a job "improbus".
From the observation of thoudands of Roman had coins materially in the hand I could tell that their weight and measure is much varied also during the same emperor. They exist As of Marcus Aurelius of weight, any times, inferior at 1/ 2 between them.

The chart that I insert is a small example.  

http://www.uniroma2.it/eventi/monete/nocpan.html

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« Reply #3 on: December 09, 2003, 04:26:46 am »

DOC does list size and weight for each variation of a particular  Byzantine coin.
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« Reply #4 on: July 04, 2005, 06:13:20 am »

Hi!

This I got via NUMIS-L:

I've pull Harl's Coinage in the Roman Economy 300 B.C. to A.D. 700 (Johns Hopkins University Press, 1996) and found the following for you:
 
p. 75:  "The purity of the denarius, which had fallen as low as 92 percent fine in the latter days of the Republic, was restored to its traditional level of 975 to 98 percent fine [under Augustus]..." 
 
p. 74: "Augustus issued virtually pure aurei and denarri struct at the respective standards of 40 and 84 to the Roman pound."
 
p. 90:  "Titus slightly improved the fineness of the denarius...In 64 Nero --- under the pressure of debts incurred in a desultory war in Armenia, rebuilding Rome after the Great Fire, and his own depraved extravagance --- conducted the first major debasement since the Second Punic War..."
 
p. 235:  "Nero...debased the denarius by more than 20 percent.  Its weight was reduced by one-eighth from 84 to 96 to the pound and its fineness was lowered from 98 to 93 percent...Furthermore, many denarii were deliberately struck below standard so that actual debasement probably ranged upwards to 25 percent or more."
 
p. 127 also has a chart of weights and fineness of denarii from Antoninus Pius (148-161) to Gordien III (241).
 
I hope this is helpful.
 
Cordially,
 
Kenneth L. Friedman


Best regards
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Lloyd Taylor
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« Reply #5 on: October 06, 2010, 11:14:45 pm »

There isn't any one place to find the weight, diameter and composition of all the various types of ancient coins.  These facts are often buried throughout references.  When you come across this type of information, please post it here.  

You might be interested in the following plot, which elegantly summarizes a couple of centuries of debasement of the Denarius

(Source: Popular Delusions When to Sell Gold by Dylan Grice - Societe Generale Cross Asset Research Strategy Document 23 March 2010)
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