S 75 - Aradus (Ptolemy VI), silver, didrachms (180-145 BCE) Duyrat
From SILVER
180 BCE - 145 BCE Silver 6,427 kg
Description
| Obverse: | Head of Ptolemy I diademed |
| Reverse: | BAΣΙΛΕΟΣ ΠΤΟΛΕΜΑΙΟΥ (Greek).Eagle standing to left on thunderbolt, date in field |
Mint and issuing power
Chronology
| From | 180 BCE | to | 145 BCE | Period: Hellenistic 323-30 BC |
Physical description
| Metal: | Silver |
Median weight in grams | 7.00 | Denomination: | didrachm |
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.]]1Duyrat 2005, p. 116-118. | ||
| Coin series reference: | |||
Obverse dies distribution
| Frequency ᵖ | Number of obverses ᵖ (o) | % (o) | Number of coins (n) | % (n) | Die name |
| 1 | 11 | 25.58 | 11 | 4.01 | |
| 2 | 4 | 9.3 | 8 | 2.92 | |
| 3 | 4 | 9.3 | 12 | 4.38 | |
| 4 | 1 | 2.33 | 4 | 1.46 | |
| 5 | 2 | 4.65 | 10 | 3.65 | |
| 6 | 3 | 6.98 | 18 | 6.57 | |
| 7 | 3 | 6.98 | 21 | 7.66 | |
| 8 | 3 | 6.98 | 24 | 8.76 | |
| 9 | 3 | 6.98 | 27 | 9.85 | |
| 10 | 1 | 2.33 | 10 | 3.65 | |
| 11 | 3 | 6.98 | 33 | 12.04 | |
| 12 | 1 | 2.33 | 12 | 4.38 | |
| 17 | 1 | 2.33 | 17 | 6.2 | |
| 20 | 1 | 2.33 | 20 | 7.3 | |
| 21 | 1 | 2.33 | 21 | 7.66 | |
| 26 | 1 | 2.33 | 26 | 9.49 | |
| Total | 43 of 43 | 100.04 | 274 of 274 | 99.98 |
Reverse dies distribution
no distribution is available
Quantification
| Number of obverses ᵖ (o) | 43 | Number of singletons (o1) ᵖ | 11 |
| Number of reverse dies (r) | 140 | Number of coins (n) | 274 |
| Coins per obverse die (n/o) | 6.37 | Coins per reverse die (n/r) | 1.96 |
| Reverse per obverse ratio (r/o) | 3.26 | Percentage of singletons (o1) ᵖ | 25.58 % |
| Original number of dies (O) (Carter 1983 formula) ᵖ | 45.91 | Coins struck if 20,000 as average productivity per die ᵖ | 918,200 |
| Original number of dies (O) (Esty 2011 formula) ᵖ (O) | 51 | Survival rate if 20,000 as average productivity per die ᵖ | 0.00030 |
| Coverage (o = % of O) (Esty 1984 formula) ᵖ (o = % of O) | 95.99% | Die productivity if survival rate 1/2,000 ᵖ | 11,936.4 |
| Weight of silver (in kg) if 20,000 coins per die (O = Carter formula) ᵖ | 6,427 kg <br /> 6,427 kg | Die productivity if survival rate 1/5,000 ᵖ | 29,840.99 |
Remarks
References
- ^ Duyrat, Frédérique (2005), Arados hellénistique. Etude historique et monétaire, Beirut