Alexandria (Ptolemy I), gold, trichrysa (300-285 BCE)
From SILVER
300 BCE - 285 BCE Gold 154,224 kg
Description
| Obverse: | Diademed head of Ptolemy I to right, wearing aegis around neck |
| Reverse: | ΠΤΟΛΕΜΑΙΟΥ ΒΑΣΙΛΕΩΣ (Greek).Eagle, with closed wings, standing l. on thunderbolt, in l. field, monogram |
Mint and issuing power
| Mint: | Alexandria | Ancient region: | Egypt | Modern country: Egypt | Authority: | Ptolemaic dynasty (323-30 BC), Ptolemy I Soter (satrap and Ptolemaic king of Egypt, 323-305 BC) |
Chronology
| From | 300 BCE | to | 285 BCE | Period: Hellenistic 323-30 BC 
|
Physical description
| Metal: | Gold
|
Median weight in grams | 17.85 | Denomination: | trichryson | Standard: | Ptolemaic |
Image
References
| Die study reference: | "[[Die study reference" contains a listed "[" character as part of the property label and has therefore been classified as invalid.]]1Roche-Lévêque 2023, p. 30-33 | ||
| Coin series reference: | "[[Coin series reference" contains a listed "[" character as part of the property label and has therefore been classified as invalid.]]2CPE I, n° 128, 133, 138, 143, 148, 152, 162, 166, 169, 171, 177 | ||
| Coin series web reference: | |||
Obverse dies distribution
| Frequency ᵖ | Number of obverses ᵖ (o) | % (o) | Number of coins (n) | % (n) | Die name |
| 1 | 14 | 40 | 14 | 12.28 | 2, 7, 9, 10, 11, 12, 13, 21, 22, 23, 26, 27, 29, 35 |
| 2 | 6 | 17.14 | 12 | 10.53 | 8, 18, 24, 28, 30, 32 |
| 3 | 4 | 11.43 | 12 | 10.53 | 19, 25, 31, 33 |
| 4 | 3 | 8.57 | 12 | 10.53 | 4, 6, 20 |
| 5 | 3 | 8.57 | 15 | 13.16 | 3, 14, 34 |
| 7 | 1 | 2.86 | 7 | 6.14 | 15 |
| 8 | 1 | 2.86 | 8 | 7.02 | 1 |
| 9 | 1 | 2.86 | 9 | 7.89 | 17 |
| 11 | 1 | 2.86 | 11 | 9.65 | 5 |
| 14 | 1 | 2.86 | 14 | 12.28 | 16 |
| Total | 35 of 35 | 100.01 | 114 of 114 | 100.01 |
Reverse dies distribution
no distribution is available
Quantification
| Number of obverses ᵖ (o) | 35 | Number of singletons (o1) ᵖ | 14 |
| Number of reverse dies (r) | 65 | Number of coins (n) | 114 |
| Coins per obverse die (n/o) | 3.26 | Coins per reverse die (n/r) | 1.75 |
| Reverse per obverse ratio (r/o) | 1.86 | Percentage of singletons (o1) ᵖ | 40 % |
| Original number of dies (O) (Carter 1983 formula) ᵖ | 43.2 | Coins struck if 20,000 as average productivity per die ᵖ | 864,000 |
| Original number of dies (O) (Esty 2011 formula) ᵖ (O) | 50.51 | Survival rate if 20,000 as average productivity per die ᵖ | 0.00013 |
| Coverage (o = % of O) (Esty 1984 formula) ᵖ (o = % of O) | 87.72% | Die productivity if survival rate 1/2,000 ᵖ | 5,277.78 |
| Weight of silver (in kg) if 20,000 coins per die (O = Carter formula) ᵖ | 154,224 kg <br /> 154,224 kg | Die productivity if survival rate 1/5,000 ᵖ | 13,194.44 |
Remarks
Most likely one single workstation Likely military
