Alexandria (Ptolemy I), gold, 10th trichrysa (294-282 BCE)
From SILVER
294 BCE - 282 BCE Gold 16,513 kg
Description
| ObverseInscription or printing placed on the obverse.: | Diademed head of Ptolemy I to right, wearing aegis around neck |
| ReverseInscription or printing placed on the reverse.: | ΠΤΟΛΕΜΑΙΟΥ ΒΑΣΙΛΕΩΣ (Greek).Eagle standing left on thunderbolt, Λ to left. |
Mint and issuing power
| MintIdentifies the place of manufacture or issue of a numismatic object.: | Alexandria | Ancient regionAncient region.: | Egypt | Modern countryModern country: Egypt | 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: | Ptolemaic dynasty (323-30 BC), Ptolemy I Soter (satrap and Ptolemaic king of Egypt, 323-305 BC) |
Chronology
| FromIdentifies the initial date in a range assigned in a numismatic context. | 294 BCE | toIdentifies the final date in a range assigned in a numismatic context.. | 282 BCE | PeriodTime period of the numismatic object.: Hellenistic 323-30 BC 
|
Physical description
| MetalThe physical material (usually metal) from which an object is made.: | Gold
|
Median weightMedian of the weights of numismatic objects (in grams). in grams | 1.75 | DenominationTerm indicating the value of a numismatic object. Examples: tetradrachm, chalkous, denarius.: | 10th trichryson | StandardStandard.: | Ptolemaic |
Image
Alexandria_10th_trichrysa_Ptolemy_I.jpg [1]
References
| Die study referencePublication of the study: | Roche-Lévêque 20231Roche-Lévêque 2023, p. 41-46 | ||
| Coin series referenceReference to coin series study: | CPE I2CPE I, n° 129, 134, 139, 144, 149, A155, 172 | ||
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). |
| 1 | 11 | 26.19 | 11 | 5.56 | 118, 125, 126, 130, 131, 132, 134, 135, 137, 138, 139 |
| 2 | 8 | 19.05 | 16 | 8.08 | 114, 115, 116, 120, 123, 124, 129, 136 |
| 3 | 6 | 14.29 | 18 | 9.09 | 111, 117, 121, 122, 128, 133 |
| 4 | 4 | 9.52 | 16 | 8.08 | 103, 113, 119, 127 |
| 6 | 1 | 2.38 | 6 | 3.03 | 110 |
| 7 | 1 | 2.38 | 7 | 3.54 | 112 |
| 8 | 2 | 4.76 | 16 | 8.08 | 107, 109 |
| 9 | 3 | 7.14 | 27 | 13.64 | 104, 106, 108 |
| 10 | 1 | 2.38 | 10 | 5.05 | 105 |
| 13 | 2 | 4.76 | 26 | 13.13 | 99, 102 |
| 14 | 2 | 4.76 | 28 | 14.14 | 100, 101 |
| 17 | 1 | 2.38 | 17 | 8.59 | 98 |
| Total | 42 of 42 | 99.99 | 198 of 198 | 100.01 |
Reverse dies distribution
no distribution is available
Quantification
| Number of obversesNumber of obverse dies. ᵖ (o) | 42 | Number of singletons (o1)The number of singleton coins. ᵖ | |
| Number of reverse diesNumber of reverse dies. (r) | 43 | Number of coinsNumber of coins. (n) | 198 |
| Coins per obverse dieNumber of coins per obverse die. (n/o) | 4.71 | Coins per reverse dieNumber of coins per reverse die. (n/r) | 4.6 |
| Reverse per obverse ratioRatio of obverse dies divided by reverse dies. (r/o) | 1.02 | 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 | 47.18 | Coins struck if 20,000 as average productivity per dieCoins made if the average productivity for obverses (according to Carter) is 20,000. ᵖ | 943,600 |
| 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) | 53.31 | Survival rate if 20,000 as average productivity per dieSurvival rate if average productivity is 20,000. ᵖ | 0.00021 |
| 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 | 8,393.39 |
| 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 | 16,513 kg <br /> 16,513 kg | Die productivity if survival rate 1/5,000Average productivity if survival rate is 1/5,000. ᵖ | 20,983.47 |
Remarks
Most likely one single workstation Likely military
