Erythrae, silver, tetradrachms (Heracles/club and bow in bowcase) (360-342 BCE)

360 BCE - 342 BCE Silver 2,550 kg

Obverse:	Head of Heracles right, wearing Nemean lion skin headdress.
Reverse:	EPY (Greek).Club and bow in bowcase, to left, owl standing right, head facing, name (here ΠEΛOΠIΔHΣ) between, monogram to lower right

Ionia

360 BCE

342 BCE

Period: Classical ^{480-323 BC}

Silver

15.00

tetradrachm

Rhodian

Die study reference:	"[[Die study reference" contains a listed "[" character as part of the property label and has therefore been classified as invalid.]]1Kinns 1980, p. 424-425 (Period II, phase 2, AR IA)
Coin series reference:

no distribution is available

Number of obverses ^ᵖ (o)	7	Number of singletons (o1) ^ᵖ	2
Number of reverse dies (r)	18	Number of coins (n)	24
Coins per obverse die (n/o)	3.43	Coins per reverse die (n/r)	1.33
Reverse per obverse ratio (r/o)	2.57	Percentage of singletons (o1) ^ᵖ	28.57 %
Original number of dies (O) (Carter 1983 formula) ^ᵖ	8.5	Coins struck if 20,000 as average productivity per die ^ᵖ	170,000
Original number of dies (O) (Esty 2011 formula) ^ᵖ (O)	9.88	Survival rate if 20,000 as average productivity per die ^ᵖ	0.00014
Coverage (o = % of O) (Esty 1984 formula) ^ᵖ (o = % of O)	91.67%	Die productivity if survival rate 1/2,000 ^ᵖ	5,647.06
Weight of silver (in kg) if 20,000 coins per die (O = Carter formula) ^ᵖ	2,550 kg <br /> 2,550 kg	Die productivity if survival rate 1/5,000 ^ᵖ	14,117.65

Most likely two workstations No obv. n° 5

References

^ Kinns, Philip (1980), Studies in the coinage of Ionia: Erythrae, Teos, Lebedus, Colophon, c. 400-30 B.C., unpublished PhD thesis, Cambridge University.