Motya (Carthaginian empire), silver, didrachms (facing Arethusa/crab) (400-397 BCE)
From SILVER
400 BCE - 397 BCE Silver 724 kg
Description
| Obverse: | Facing head of Arethusa with flowing hair, six dolphins around |
| Reverse: | (Punic).Crab with fish above, Punic legend mtv below |
Mint and issuing power
| Mint: | Motya | Ancient region: | Sicily | Modern country: Italy | Authority: | Carthaginian Empire |
Chronology
| From | 400 BCE | to | 397 BCE | Period: Classical 480-323 BC 
|
Physical description
| Metal: | Silver
|
Median weight in grams | 8.30 | Denomination: | didrachm
|
Standard: |
Image
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References
| Die study reference: | "[[Die study reference" contains a listed "[" character as part of the property label and has therefore been classified as invalid.]]1Jenkins 1971, p. 37, n° 48-50 (Period III) | ||
| Coin series reference: | "[[Coin series reference" contains a listed "[" character as part of the property label and has therefore been classified as invalid.]]2Sear I, n° 870 | ||
| Coin series web reference: | |||
Obverse dies distribution
| Frequency ᵖ | Number of obverses ᵖ (o) | % (o) | Number of coins (n) | % (n) | Die name |
| 1 | 1 | 33.33 | 1 | 14.29 | 3 |
| 2 | 1 | 33.33 | 2 | 28.57 | 2 |
| 4 | 1 | 33.33 | 4 | 57.14 | 1 |
| Total | 3 of 3 | 99.99 | 7 of 7 | 100 |
Reverse dies distribution
no distribution is available
Quantification
| Number of obverses ᵖ (o) | 3 | Number of singletons (o1) ᵖ | 1 |
| Number of reverse dies (r) | 1 | Number of coins (n) | 7 |
| Coins per obverse die (n/o) | 2.33 | Coins per reverse die (n/r) | 7 |
| Reverse per obverse ratio (r/o) | 0.33 | Percentage of singletons (o1) ᵖ | 33.33 % |
| Original number of dies (O) (Carter 1983 formula) ᵖ | 4.36 | Coins struck if 20,000 as average productivity per die ᵖ | 87,200 |
| Original number of dies (O) (Esty 2011 formula) ᵖ (O) | 5.25 | Survival rate if 20,000 as average productivity per die ᵖ | 0.00008 |
| Coverage (o = % of O) (Esty 1984 formula) ᵖ (o = % of O) | 85.71% | Die productivity if survival rate 1/2,000 ᵖ | 3,211.01 |
| Weight of silver (in kg) if 20,000 coins per die (O = Carter formula) ᵖ | 724 kg <br /> 724 kg | Die productivity if survival rate 1/5,000 ᵖ | 8,027.52 |
Remarks
Most likely one single workstation
