Ptolemais-Ake? (Ptolemy II), silver, tetradrachms (256-246 BCE)
From SILVER
256 BCE - 246 BCE Silver 8,352 kg
Description
| Obverse: | Diademed head of Ptolemy I right, aegis around neck |
| Reverse: | BAΣΙΛΕΩΣ ΠΤΟΛΕΜΑΙΟΥ (Greek).Eagle with closed wings standing left on thunderbolt, to left, monogram above ΛΕ, to right, AB above Θ |
Mint and issuing power
| Mint: | Ptolemais-Ake | Ancient region: | Phoenicia | Modern country: Israel | Authority: | Ptolemaic dynasty (323-30 BC), Ptolemy II Philadelphus (Ptolemaic king, 283-246 BC) |
Chronology
| From | 256 BCE | to | 246 BCE | Period: Hellenistic 323-30 BC 
|
Physical description
| Metal: | Silver
|
Median weight in grams | 14.20 | Denomination: | tetradrachm
|
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.]]1Lorber 2013 | ||
| 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° 700 | ||
Obverse dies distribution
| Frequency ᵖ | Number of obverses ᵖ (o) | % (o) | Number of coins (n) | % (n) | Die name |
| 1 | 10 | 58.82 | 10 | 31.25 | |
| 2 | 3 | 17.65 | 6 | 18.75 | |
| 3 | 2 | 11.76 | 6 | 18.75 | |
| 4 | 1 | 5.88 | 4 | 12.5 | |
| 6 | 1 | 5.88 | 6 | 18.75 | |
| Total | 17 of 17 | 99.99 | 32 of 32 | 100 |
Reverse dies distribution
no distribution is available
Quantification
| Number of obverses ᵖ (o) | 17 | Number of singletons (o1) ᵖ | 10 |
| Number of reverse dies (r) | 28 | Number of coins (n) | 32 |
| Coins per obverse die (n/o) | 1.88 | Coins per reverse die (n/r) | 1.14 |
| Reverse per obverse ratio (r/o) | 1.65 | Percentage of singletons (o1) ᵖ | 58.82 % |
| Original number of dies (O) (Carter 1983 formula) ᵖ | 29.41 | Coins struck if 20,000 as average productivity per die ᵖ | 588,200 |
| Original number of dies (O) (Esty 2011 formula) ᵖ (O) | 36.27 | Survival rate if 20,000 as average productivity per die ᵖ | 0.00005 |
| Coverage (o = % of O) (Esty 1984 formula) ᵖ (o = % of O) | 68.75% | Die productivity if survival rate 1/2,000 ᵖ | 2,176.13 |
| Weight of silver (in kg) if 20,000 coins per die (O = Carter formula) ᵖ | 8,352 kg <br /> 8,352 kg | Die productivity if survival rate 1/5,000 ᵖ | 5,440.33 |
Remarks
