Susa (Aspeisas), silver, tetradrachms (Heracles/seated Zeus) (312-311 BCE)

312 BCE - 311 BCE Silver 400 kg

Obverse:	Head of Herakles right wearing lion's scalp
Reverse:	ΑΛΕΞΑΝΔΡΟΥ (Greek).ΑΣΠΕΙΣΟΥ. Zeus seated on stool-throne left, eagle on outstretched right hand, sceptre in left hand

Mesopotamia

312 BCE

311 BCE

Period: Hellenistic ^{323-30 BC}

Silver

17.10

tetradrachm

Attic

Die study reference:	"[[Die study reference" contains a listed "[" character as part of the property label and has therefore been classified as invalid.]]1Taylor 2019b, p. 38 (Group 4)
Coin series reference:	"[[Coin series reference" contains a listed "[" character as part of the property label and has therefore been classified as invalid.]]2Price 1991, n° 3852
Coin series web reference:	https://numismatics.org/pella/id/price.3852

no distribution is available

Number of obverses ^ᵖ (o)	1	Number of singletons (o1) ^ᵖ
Number of reverse dies (r)	3	Number of coins (n)	4
Coins per obverse die (n/o)	4	Coins per reverse die (n/r)	1.33
Reverse per obverse ratio (r/o)	3	Percentage of singletons (o1) ^ᵖ	%
Original number of dies (O) (Carter 1983 formula) ^ᵖ	1.17	Coins struck if 20,000 as average productivity per die ^ᵖ	23,400
Original number of dies (O) (Esty 2011 formula) ^ᵖ (O)	1.33	Survival rate if 20,000 as average productivity per die ^ᵖ	0.00017
Coverage (o = % of O) (Esty 1984 formula) ^ᵖ (o = % of O)	%	Die productivity if survival rate 1/2,000 ^ᵖ	6,837.61
Weight of silver (in kg) if 20,000 coins per die (O = Carter formula) ^ᵖ	400 kg <br /> 400 kg	Die productivity if survival rate 1/5,000 ^ᵖ	17,094.02

Most likely one single workstation Likely military

References

^ Taylor, Lloyd W. H. (2019), "The Macedonian Mint at Susa (319/8-312/1 BC)", Koinon, 2, p. 28-62.
^ Price, Martin Jessop (1991), The Coinage in the Name of Alexander the Great and Philip Arrhidaeus: a British Museum Catalogue, 2 vol., Zürich-London, 637 p., 637 p., clix pl.