Ecbatana (Seleucus I), silver, hemidrachms (Heracles/seated Zeus - ΑΛΕΞΑΝΔΡΟΥ) (311-293 BCE)
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311 BCE - 293 BCE Silver 500 kg
Description
ObverseInscription or printing placed on the obverse.: | Beardless head of Heracles right wearing lion skin headdress |
ReverseInscription or printing placed on the reverse.: | ΑΛΕΞΑΝΔΡΟΥ (Greek).Zeus seated on high-backed throne left, holding eagle on outstretched right hand and sceptre in left |
Mint and issuing power
MintIdentifies the place of manufacture or issue of a numismatic object.: | Ecbatana | Ancient regionAncient region.: | Media | Modern countryModern country: Iran | AuthorityIdentifies the issuing power. The authority can be "pretended" when the name or the portrait of X is on the coin but he/she was not the issuing power. It can also be "uncertain" when there is no mention of X on the coin but he/she was the issuing power according to the historical sources: | Seleucid Dynasty (312-63 BC), Seleucus I Nicator (satrap in 321-305 BC and Seleucid king in 305-281 BC), Alexander III the Great (Argead king, 336-323 BC) |
Chronology
FromIdentifies the initial date in a range assigned in a numismatic context. | 311 BCE | toIdentifies the final date in a range assigned in a numismatic context.. | 293 BCE | PeriodTime period of the numismatic object.: Hellenistic 323-30 BC ![]() |
Physical description
MetalThe physical material (usually metal) from which an object is made.: | Silver ![]() |
Median weightMedian of the weights of numismatic objects (in grams). in grams | 2.10 | DenominationTerm indicating the value of a numismatic object. Examples: tetradrachm, chalkous, denarius.: | hemidrachm ![]() |
StandardStandard.: | Attic |
Image

Ecbatana_Seleucus_hemidrachm_(Alexander)+.jpg [1]
References
Die study referencePublication of the study: | Boillet 20091Boillet 2009, p. 78-79, n° 239-253 | ||
Coin series referenceReference to coin series study: | SC I2SC I, n° 212 | ||
Coin series web referenceCoin series web references: |
Obverse dies distribution
Reverse dies distribution
no distribution is available
Quantification
Number of obversesNumber of obverse dies. ᵖ (o) | 8 | Number of singletons (o1)The number of singleton coins. ᵖ | 5 |
Number of reverse diesNumber of reverse dies. (r) | 8 | Number of coinsNumber of coins. (n) | 18 |
Coins per obverse dieNumber of coins per obverse die. (n/o) | 2.25 | Coins per reverse dieNumber of coins per reverse die. (n/r) | 2.25 |
Reverse per obverse ratioRatio of obverse dies divided by reverse dies. (r/o) | 1 | Percentage of singletons (o1)number of coins (n) divided by the number of singletons (o1) ᵖ | 62.5 % |
Original number of dies (O) (Carter 1983 formula)The estimation of the number of coins according to Carter 1983 ᵖ | 11.9 | Coins struck if 20,000 as average productivity per dieCoins made if the average productivity for obverses (according to Carter) is 20,000. ᵖ | 238,000 |
Original number of dies (O) (Esty 2011 formula)The estimation of the number of coins according to the singleton formula in Esty 2011 ᵖ (O) | 14.4 | Survival rate if 20,000 as average productivity per dieSurvival rate if average productivity is 20,000. ᵖ | 0.00008 |
Coverage (o = % of O) (Esty 1984 formula)Esty 1984 - coverage (% of O) ᵖ (o = % of O) | 72.22% | Die productivity if survival rate 1/2,000Average productivity if survival rate is 1/2,000. ᵖ | 3,025.21 |
Weight of silver (in kg) if 20,000 coins per die (O = Carter formula)Carter 1983 * Median weight * 20000 (*10 if gold or electrum) ᵖ | 500 kg <br /> 500 kg | Die productivity if survival rate 1/5,000Average productivity if survival rate is 1/5,000. ᵖ | 7,563.03 |
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.
- ^ Houghton, Arthur - Lorber, Catharine (2002), Seleucid coins : a comprehensive catalogue. Part 1, Seleucus I through Antiochus III, New York - Lancaster - London, 2 v. (xxxviii, 488 p. + 300 p.), 101 pl.