Alexandria (Ptolemy II), gold, trichrysa (274-272 BCE)
From SILVER
274 BCE - 272 BCE Gold 63,903 kg
Description
| Obverse: | Diademed head of Ptolemy I to right, wearing aegis around neck |
| Reverse: | ΠΤΟΛΕΜΑΙΟΥ ΒΑΣΙΛΕΩΣ (Greek).Eagle standing to left on thunderbolt, monogram above Galatian shield to left, P between eagle's legs |
Mint and issuing power
Chronology
| From | 274 BCE | to | 272 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. 35-38 | ||
| 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° 276, 278, 282, 287, 290, 294, 298, 301, 304 | ||
Obverse dies distribution
| Frequency ᵖ | Number of obverses ᵖ (o) | % (o) | Number of coins (n) | % (n) | Die name |
| 3 | 1 | 5.88 | 3 | 2.5 | 57 |
| 6 | 1 | 5.88 | 6 | 5 | 65 |
| 7 | 4 | 23.53 | 28 | 23.33 | 54, 55, 61, 66 |
| 8 | 3 | 17.65 | 24 | 20 | 59, 62, 69 |
| 10 | 1 | 5.88 | 10 | 8.33 | 63 |
| 13 | 1 | 5.88 | 13 | 10.83 | 60 |
| 14 | 1 | 5.88 | 14 | 11.67 | 53 |
| 16 | 1 | 5.88 | 16 | 13.33 | 64 |
| 1 | 2 | 11.76 | 2 | 1.67 | 67, 68 |
| 2 | 2 | 11.76 | 4 | 3.33 | 56, 58 |
| Total | 17 of 17 | 99.98 | 120 of 120 | 99.99 |
Reverse dies distribution
no distribution is available
Quantification
| Number of obverses ᵖ (o) | 17 | Number of singletons (o1) ᵖ | 2 |
| Number of reverse dies (r) | 71 | Number of coins (n) | 120 |
| Coins per obverse die (n/o) | 7.06 | Coins per reverse die (n/r) | 1.69 |
| Reverse per obverse ratio (r/o) | 4.18 | Percentage of singletons (o1) ᵖ | 11.76 % |
| Original number of dies (O) (Carter 1983 formula) ᵖ | 17.9 | Coins struck if 20,000 as average productivity per die ᵖ | 358,000 |
| Original number of dies (O) (Esty 2011 formula) ᵖ (O) | 19.81 | Survival rate if 20,000 as average productivity per die ᵖ | 0.00034 |
| Coverage (o = % of O) (Esty 1984 formula) ᵖ (o = % of O) | 98.33% | Die productivity if survival rate 1/2,000 ᵖ | 13,407.82 |
| Weight of silver (in kg) if 20,000 coins per die (O = Carter formula) ᵖ | 63,903 kg <br /> 63,903 kg | Die productivity if survival rate 1/5,000 ᵖ | 33,519.55 |
Remarks
Most likely one single workstation Likely military
