Byzantium, silver, 9 obols (Demeter/seated Poseidon) (240-220 BCE)
From SILVER
240 BCE - 220 BCE Silver 2,417 kg
Description
| Obverse: | Veiled head of Demeter, right, wearing corn wreath. |
| Reverse: | BY (monogram) / ΕΠΙ + name of magistrate (Greek).Poseidon seated right on rock, holding aplustre and trident. |
Mint and issuing power
| Mint: | Byzantium | Ancient region: | Thrace | Modern country: Turkey | Authority: |
Chronology
| From | 240 BCE | to | 220 BCE | Period: Hellenistic 323-30 BC 
|
Physical description
| Metal: | Silver
|
Median weight in grams | 5.30 | Denomination: | 9 obol | 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. 136-137, n° 1026-1042 | ||
| Coin series reference: | "[[Coin series reference" contains a listed "[" character as part of the property label and has therefore been classified as invalid.]]2RQEMH, n° 67, "[[Coin series reference" contains a listed "[" character as part of the property label and has therefore been classified as invalid.]]3HGC 3.2, n° 1409 | ||
| Coin series web reference: | |||
Reverse dies distribution
no distribution is available
Quantification
| Number of obverses ᵖ (o) | 11 | Number of singletons (o1) ᵖ | 7 |
| Number of reverse dies (r) | 15 | Number of coins (n) | 18 |
| Coins per obverse die (n/o) | 1.64 | Coins per reverse die (n/r) | 1.2 |
| Reverse per obverse ratio (r/o) | 1.36 | Percentage of singletons (o1) ᵖ | 63.64 % |
| Original number of dies (O) (Carter 1983 formula) ᵖ | 22.8 | Coins struck if 20,000 as average productivity per die ᵖ | 456,000 |
| Original number of dies (O) (Esty 2011 formula) ᵖ (O) | 28.29 | Survival rate if 20,000 as average productivity per die ᵖ | 0.00004 |
| Coverage (o = % of O) (Esty 1984 formula) ᵖ (o = % of O) | 61.11% | Die productivity if survival rate 1/2,000 ᵖ | 1,578.95 |
| Weight of silver (in kg) if 20,000 coins per die (O = Carter formula) ᵖ | 2,417 kg <br /> 2,417 kg | Die productivity if survival rate 1/5,000 ᵖ | 3,947.37 |
Remarks
Most likely one single workstation
References
- ^ Schönert-Geiss, Edith (1970), Die Münzprägung von Byzantion. Teil 1: Autonome Zeit, Berlin.
- ^ Callataÿ, François de (1997), Recueil quantitatif des émissions monétaires hellénistiques, Numismatique Romaine, Wetteren, X + 341 p.
- ^ Hoover, Oliver D. (2017), Handbook of Coins of Macedon and Its Neighbors. 3. Part 2: Thrace, Skythia, and Taurike, Sixth to First Centuries BC, Lancaster-London, xix, 232 p.
