H 154 - Chalcis, silver, tetrobol, 130-87 BC
From SILVER
130 BCE - 87 BCE Silver 110 kg
Description
| Obverse: | Lightly draped bust of Hera facing, turned very slightly to the right, wearing a diadem of pearls, with its ends hanging down on either side of her head, and triple-pendant earrings. |
| Reverse: | XAΛKI (Greek).Galley prow to right. |
Mint and issuing power
| Mint: | Chalcis | Ancient region: | Euboea | Modern country: Greece | Authority: |
Chronology
| From | 130 BCE | to | 87 BCE | Period: Hellenistic 323-30 BC 
|
Physical description
| Metal: | Silver
|
Median weight in grams | 2.70 | Denomination: | tetrobol
|
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.]]1Picard 1979 | ||
| 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° 154 | ||
Obverse dies distribution
| Frequency ᵖ | Number of obverses ᵖ (o) | % (o) | Number of coins (n) | % (n) | Die name |
| 6 | 1 | 50 | 6 | 31.58 | 83/1 |
| 13 | 1 | 50 | 13 | 68.42 | 82/1 |
| Total | 2 of 2 | 100 | 19 of 19 | 100 |
Reverse dies distribution
no distribution is available
Quantification
| Number of obverses ᵖ (o) | 2 | Number of singletons (o1) ᵖ | |
| Number of reverse dies (r) | 4 | Number of coins (n) | 19 |
| Coins per obverse die (n/o) | 9.5 | Coins per reverse die (n/r) | 4.75 |
| Reverse per obverse ratio (r/o) | 2 | Percentage of singletons (o1) ᵖ | % |
| Original number of dies (O) (Carter 1983 formula) ᵖ | 2.04 | Coins struck if 20,000 as average productivity per die ᵖ | 40,800 |
| Original number of dies (O) (Esty 2011 formula) ᵖ (O) | 2.24 | Survival rate if 20,000 as average productivity per die ᵖ | 0.00047 |
| Coverage (o = % of O) (Esty 1984 formula) ᵖ (o = % of O) | % | Die productivity if survival rate 1/2,000 ᵖ | 18,627.45 |
| Weight of silver (in kg) if 20,000 coins per die (O = Carter formula) ᵖ | 110 kg <br /> 110 kg | Die productivity if survival rate 1/5,000 ᵖ | 46,568.63 |
Remarks
Most likely one single workstation
