Calchedon and Byzantium, bronze (5.8g) (Poseidon/prow) (200-100 BCE)
From SILVER
200 BCE - 100 BCE Bronze
Description
| Obverse: | Head of Poseidon, left, wearing taenia |
| Reverse: | ΒΥΖΑΝ ΚΑΛΧΑ (Greek).Prora, dolphin at right. |
Mint and issuing power
| Mint: | Byzantium | Ancient region: | Thrace | Modern country: Turkey | Authority: |
Chronology
| From | 200 BCE | to | 100 BCE | Period: Hellenistic 323-30 BC 
|
Physical description
| Metal: | Bronze
|
Median weight in grams | 5.80 | Denomination: | 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.]]1Schönert-Geiss 1970, p. 150, n° 1290-1295 | ||
| Coin series reference: | "[[Coin series reference" contains a listed "[" character as part of the property label and has therefore been classified as invalid.]]2HGC 3.2, n° 1430 | ||
| 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 | 33.33 | 3, 4 |
| 2 | 2 | 50 | 4 | 66.67 | 1, 2 |
| Total | 4 of 4 | 100 | 6 of 6 | 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) | 6 | Number of coins (n) | 6 |
| Coins per obverse die (n/o) | 1.5 | Coins per reverse die (n/r) | 1 |
| Reverse per obverse ratio (r/o) | 1.5 | Percentage of singletons (o1) ᵖ | 50 % |
| Original number of dies (O) (Carter 1983 formula) ᵖ | 9.62 | Coins struck if 20,000 as average productivity per die ᵖ | 192,400 |
| Original number of dies (O) (Esty 2011 formula) ᵖ (O) | 12 | Survival rate if 20,000 as average productivity per die ᵖ | 0.00003 |
| Coverage (o = % of O) (Esty 1984 formula) ᵖ (o = % of O) | 66.67% | Die productivity if survival rate 1/2,000 ᵖ | 1,247.4 |
| Weight of silver (in kg) if 20,000 coins per die (O = Carter formula) ᵖ | n.a. | Die productivity if survival rate 1/5,000 ᵖ | 3,118.5 |
Remarks
Most likely one single workstation
