AC 53a - Gela, silver, didrachms (420-415 BCE)
From SILVER
420 BCE - 415 BCE Silver 168 kg
Description
| ObverseInscription or printing placed on the obverse.: | Rider galloping right, wearing Phrygian helmet, short chiton and chlamys, hurling javelin from upraised right hand. |
| ReverseInscription or printing placed on the reverse.: | ΓΕΛAΣ (Greek).Forepart of man-headed bull (the river-god Gelas) left. |
Mint and issuing power
| MintIdentifies the place of manufacture or issue of a numismatic object.: | Gela | Ancient regionAncient region.: | Sicily | Modern countryModern country: Italy | AuthorityIdentifies the issuing power. The authority can be "pretended" when the name or the portrait of X is on the coin but he/she was not the issuing power. It can also be "uncertain" when there is no mention of X on the coin but he/she was the issuing power according to the historical sources: |
Chronology
| FromIdentifies the initial date in a range assigned in a numismatic context. | 420 BCE | toIdentifies the final date in a range assigned in a numismatic context.. | 415 BCE | PeriodTime period of the numismatic object.: Classical 480-323 BC 
|
Physical description
| MetalThe physical material (usually metal) from which an object is made.: | Silver
|
Median weightMedian of the weights of numismatic objects (in grams). in grams | 8.40 | DenominationTerm indicating the value of a numismatic object. Examples: tetradrachm, chalkous, denarius.: | didrachm
|
StandardStandard.: | Attic |
Image
AC 53a - Gela, silver, didrachm, 420-415 BC.jpg [1]
References
| Die study referencePublication of the study: | Jenkins 19701Jenkins 1970, p. 263-264, n° 479 (groupe VIII). | ||
| Coin series referenceReference to coin series study: | Sear I2Sear I, n° 802 | ||
| Coin series web referenceCoin series web references: | |||
Obverse dies distribution
| FrequencyFrequency of specimen in distribution. ᵖ | Number of obversesNumber of obverse dies. ᵖ (o) | % (o) | Number of coinsNumber of coins. (n) | % (n) | Die nameName(s) of the die(s). |
| 13 | 1 | 100 | 13 | 100 | 93 |
| Total | 1 of 1 | 100 | 13 of 13 | 100 |
Reverse dies distribution
no distribution is available
Quantification
| Number of obversesNumber of obverse dies. ᵖ (o) | 1 | Number of singletons (o1)The number of singleton coins. ᵖ | |
| Number of reverse diesNumber of reverse dies. (r) | 1 | Number of coinsNumber of coins. (n) | 13 |
| Coins per obverse dieNumber of coins per obverse die. (n/o) | 13 | Coins per reverse dieNumber of coins per reverse die. (n/r) | 13 |
| Reverse per obverse ratioRatio of obverse dies divided by reverse dies. (r/o) | 1 | Percentage of singletons (o1)number of coins (n) divided by the number of singletons (o1) ᵖ | % |
| Original number of dies (O) (Carter 1983 formula)The estimation of the number of coins according to Carter 1983 ᵖ | 1 | Coins struck if 20,000 as average productivity per dieCoins made if the average productivity for obverses (according to Carter) is 20,000. ᵖ | 20,000 |
| Original number of dies (O) (Esty 2011 formula)The estimation of the number of coins according to the singleton formula in Esty 2011 ᵖ (O) | 1.08 | Survival rate if 20,000 as average productivity per dieSurvival rate if average productivity is 20,000. ᵖ | 0.00065 |
| Coverage (o = % of O) (Esty 1984 formula)Esty 1984 - coverage (% of O) ᵖ (o = % of O) | % | Die productivity if survival rate 1/2,000Average productivity if survival rate is 1/2,000. ᵖ | 26,000 |
| Weight of silver (in kg) if 20,000 coins per die (O = Carter formula)Carter 1983 * Median weight * 20000 (*10 if gold or electrum) ᵖ | 168 kg <br /> 168 kg | Die productivity if survival rate 1/5,000Average productivity if survival rate is 1/5,000. ᵖ | 65,000 |
Remarks
Most likely one single workstation
