S 1395 - Ecbatana (Artabanus IV), silver, drachms (216-224 CE)
From SILVER
216 CE - 224 CE Silver 1,981 kg
Description
| Obverse: | Bust of the king left. In the field, 2 marks. |
| Reverse: | King seated right, wearing diadem, holding bow. In the right field, letters. |
Mint and issuing power
| Mint: | Ecbatana | Ancient region: | Media | Modern country: Iran | Authority: | Parthian Empire, Artabanus IV (king of the Parthian kingdom, c. 216-224 AD) |
Chronology
| From | 216 CE | to | 224 CE | Period: Roman from 30 BC 
|
Physical description
| Metal: | Silver
|
Median weight in grams | 3.70 | Denomination: | drachm | Standard: |
References
| Die study reference: | "[[Die study reference" contains a listed "[" character as part of the property label and has therefore been classified as invalid.]]1Boillet 2009, p. 896-901, no. 7034-7108. | ||
| Coin series reference: | |||
Obverse dies distribution
| Frequency ᵖ | Number of obverses ᵖ (o) | % (o) | Number of coins (n) | % (n) | Die name |
| 1 | 8 | 36.36 | 8 | 10.67 | D9, D13, D14, D15, D16, D19, D21, D22 |
| 2 | 4 | 18.18 | 8 | 10.67 | D10, D17, D18, D20 |
| 3 | 4 | 18.18 | 12 | 16 | D3, D6, D8, D11 |
| 5 | 2 | 9.09 | 10 | 13.33 | D4, D7 |
| 6 | 1 | 4.55 | 6 | 8 | D12 |
| 7 | 1 | 4.55 | 7 | 9.33 | D5 |
| 8 | 1 | 4.55 | 8 | 10.67 | D2 |
| 14 | 1 | 4.55 | 14 | 18.67 | D1 |
| Total | 22 of 22 | 100.01 | 73 of 75 | 97.34 |
Reverse dies distribution
no distribution is available
Quantification
| Number of obverses ᵖ (o) | 22 | Number of singletons (o1) ᵖ | 8 |
| Number of reverse dies (r) | 22 | Number of coins (n) | 75 |
| Coins per obverse die (n/o) | 3.41 | Coins per reverse die (n/r) | 3.41 |
| Reverse per obverse ratio (r/o) | 1 | Percentage of singletons (o1) ᵖ | 36.36 % |
| Original number of dies (O) (Carter 1983 formula) ᵖ | 26.77 | Coins struck if 20,000 as average productivity per die ᵖ | 535,400 |
| Original number of dies (O) (Esty 2011 formula) ᵖ (O) | 31.13 | Survival rate if 20,000 as average productivity per die ᵖ | 0.00014 |
| Coverage (o = % of O) (Esty 1984 formula) ᵖ (o = % of O) | 89.33% | Die productivity if survival rate 1/2,000 ᵖ | 5,603.29 |
| Weight of silver (in kg) if 20,000 coins per die (O = Carter formula) ᵖ | 1,981 kg <br /> 1,981 kg | Die productivity if survival rate 1/5,000 ᵖ | 14,008.22 |
Remarks
References
- ^ Boillet, Pierre-Yves (2009), Ecbatane et la Médie d’Alexandre aux Arsacides (c. 331 a.C. - c. 224 p.C.). Histoire monétaire et économique, unpublished doctoral dissertation, Bordeaux University.
