Syracuse, silver, didrachms (horseman/Arethusa) (474-450 BCE)
From SILVER
474 BCE - 450 BCE Silver 952 kg
Description
| Obverse: | Horseman riding right |
| Reverse: | ΣYPAKOΣION (Greek).Head of Arethusa right, four dolphins around. |
Mint and issuing power
| Mint: | Syracuse | Ancient region: | Sicily | Modern country: Italy | Authority: |
Chronology
| From | 474 BCE | to | 450 BCE | Period: Classical 480-323 BC 
|
Physical description
| Metal: | Silver
|
Median weight in grams | 8.55 | Denomination: | didrachm
|
Standard: | Attic |
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.]]1Boehringer 1929, p. 204, n° 497, p. 213, n° 548, p. 222, n° 591 et p. 226, n° 606. | ||
| Coin series reference: | "[[Coin series reference" contains a listed "[" character as part of the property label and has therefore been classified as invalid.]]2RQEMAC, n° 93a | ||
| Coin series web reference: | |||
Obverse dies distribution
| Frequency ᵖ | Number of obverses ᵖ (o) | % (o) | Number of coins (n) | % (n) | Die name |
| 1 | 2 | 50 | 2 | 20 | 1 |
| 2 | 1 | 25 | 2 | 20 | 1 |
| 6 | 1 | 25 | 6 | 60 | 1 |
| Total | 4 of 4 | 100 | 10 of 10 | 100 |
Reverse dies distribution
no distribution is available
Quantification
| Number of obverses ᵖ (o) | 4 | Number of singletons (o1) ᵖ | 2 |
| Number of reverse dies (r) | 4 | Number of coins (n) | 10 |
| Coins per obverse die (n/o) | 2.5 | Coins per reverse die (n/r) | 2.5 |
| Reverse per obverse ratio (r/o) | 1 | Percentage of singletons (o1) ᵖ | 50 % |
| Original number of dies (O) (Carter 1983 formula) ᵖ | 5.57 | Coins struck if 20,000 as average productivity per die ᵖ | 111,400 |
| Original number of dies (O) (Esty 2011 formula) ᵖ (O) | 6.67 | Survival rate if 20,000 as average productivity per die ᵖ | 0.00009 |
| Coverage (o = % of O) (Esty 1984 formula) ᵖ (o = % of O) | 80% | Die productivity if survival rate 1/2,000 ᵖ | 3,590.66 |
| Weight of silver (in kg) if 20,000 coins per die (O = Carter formula) ᵖ | 952 kg <br /> 952 kg | Die productivity if survival rate 1/5,000 ᵖ | 8,976.66 |
Remarks
Most likely one single workstation
