S 1348 - Ecbatana (Mithridates I), bronze, tetrachalka (148-144 BCE)
From SILVER
148 BCE - 144 BCE Bronze
Description
| Obverse: | Bust of the king right, wearing diadem. In the field, ΔΧ (value). Border of dots. |
| Reverse: | ΒΑΣΙΛΕΩΣ ΑΡΣΑΚΟΥ (Greek).Nike driving biga right. Border of dots. |
Mint and issuing power
| Mint: | Ecbatana | Ancient region: | Media | Modern country: Iran | Authority: | Parthian Empire, Mithridates I (king of the Parthian Empire, 171-138 BC) |
Chronology
| From | 148 BCE | to | 144 BCE | Period: Hellenistic 323-30 BC 
|
Physical description
| Metal: | Bronze
|
Median weight in grams | 8.00 | Denomination: | tetrachalkon
|
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. 273-274, no. 1316. | ||
| Coin series reference: | |||
Obverse dies distribution
| Frequency ᵖ | Number of obverses ᵖ (o) | % (o) | Number of coins (n) | % (n) | Die name |
| 1 | 2 | 33.33 | 2 | 22.22 | 5, 6 |
| 2 | 2 | 33.33 | 4 | 44.44 | 2, 4 |
| 3 | 1 | 16.67 | 3 | 33.33 | 3 |
| Total | 5 of 6 | 83.33 | 9 of 9 | 99.99 |
Reverse dies distribution
no distribution is available
Quantification
| Number of obverses ᵖ (o) | 6 | Number of singletons (o1) ᵖ | 2 |
| Number of reverse dies (r) | Number of coins (n) | 9 | |
| Coins per obverse die (n/o) | 1.5 | Coins per reverse die (n/r) | |
| Reverse per obverse ratio (r/o) | Percentage of singletons (o1) ᵖ | 33.33 % | |
| Original number of dies (O) (Carter 1983 formula) ᵖ | 14.42 | Coins struck if 20,000 as average productivity per die ᵖ | 288,400 |
| Original number of dies (O) (Esty 2011 formula) ᵖ (O) | 18 | Survival rate if 20,000 as average productivity per die ᵖ | 0.00003 |
| Coverage (o = % of O) (Esty 1984 formula) ᵖ (o = % of O) | 77.78% | Die productivity if survival rate 1/2,000 ᵖ | 1,248.27 |
| 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 | 3,120.67 |
Remarks
Most likely one single workstation
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 Histoire monétaire et économique, unpublished doctoral dissertation, Bordeaux University.
