Cos, silver, tetradrachms (Heracles/crab & club) (285-258 BCE) Réquier
From SILVER
285 BCE - 258 BCE Silver 4,274 kg
Description
| Obverse: | Head of young Herakles right in lion skin headdress |
| Reverse: | KΩΙΟΝ (Greek).Crab and and bow in bowcase, all within square with dotted border |
Mint and issuing power
| Mint: | Cos | Ancient region: | Caria (islands) | Modern country: Greece | Authority: |
Chronology
| From | 285 BCE | to | 258 BCE | Period: Hellenistic 323-30 BC 
|
Physical description
| Metal: | Silver
|
Median weight in grams | 14.80 | Denomination: | tetradrachm
|
Standard: |
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.]]1Réquier 1996, p. 53-64, pl. 7-12. | ||
| Coin series reference: | |||
| Coin series web reference: | |||
Obverse dies distribution
| Frequency ᵖ | Number of obverses ᵖ (o) | % (o) | Number of coins (n) | % (n) | Die name |
| 1 | 2 | 14.29 | 2 | 1.68 | |
| 4 | 3 | 21.43 | 12 | 10.08 | |
| 5 | 1 | 7.14 | 5 | 4.2 | |
| 7 | 1 | 7.14 | 7 | 5.88 | |
| 8 | 1 | 7.14 | 8 | 6.72 | |
| 9 | 1 | 7.14 | 9 | 7.56 | |
| 10 | 1 | 7.14 | 10 | 8.4 | |
| 14 | 1 | 7.14 | 14 | 11.76 | |
| 15 | 1 | 7.14 | 15 | 12.61 | |
| 16 | 1 | 7.14 | 16 | 13.45 | |
| 21 | 1 | 7.14 | 21 | 17.65 | |
| Total | 14 of 14 | 99.98 | 119 of 119 | 99.99 |
Reverse dies distribution
no distribution is available
Quantification
| Number of obverses ᵖ (o) | 14 | Number of singletons (o1) ᵖ | 2 |
| Number of reverse dies (r) | 57 | Number of coins (n) | 119 |
| Coins per obverse die (n/o) | 8.5 | Coins per reverse die (n/r) | 2.09 |
| Reverse per obverse ratio (r/o) | 4.07 | Percentage of singletons (o1) ᵖ | 14.29 % |
| Original number of dies (O) (Carter 1983 formula) ᵖ | 14.44 | Coins struck if 20,000 as average productivity per die ᵖ | 288,800 |
| Original number of dies (O) (Esty 2011 formula) ᵖ (O) | 15.87 | Survival rate if 20,000 as average productivity per die ᵖ | 0.00041 |
| Coverage (o = % of O) (Esty 1984 formula) ᵖ (o = % of O) | 98.32% | Die productivity if survival rate 1/2,000 ᵖ | 16,481.99 |
| Weight of silver (in kg) if 20,000 coins per die (O = Carter formula) ᵖ | 4,274 kg <br /> 4,274 kg | Die productivity if survival rate 1/5,000 ᵖ | 41,204.99 |
Remarks
References
- ^ Réquier, Pierre (1996), "Les premiers tétradrachmes hellénistiques de Cos", Revue Suisse de Numismatique 75, p. 53-64, pl. 7-12.
