S 178 - Coressia, silver, hemidrachms (510-480 BCE)

Die study reference:	"[[Die study reference" contains a listed "[" character as part of the property label and has therefore been classified as invalid.]]1Papageorgiadou-Banis 1997, p. 78, n° 18-25 (Series II), "[[Die study reference" contains a listed "[" character as part of the property label and has therefore been classified as invalid.]]2Sheedy 2006, p. 166-167, no. 19-25.
Coin series reference:
Coin series web reference:	https://greekcoinage.org/iris/id/coressia sheedy 2006 iii 32-9

no distribution is available

Number of obverses ^ᵖ (o)	6	Number of singletons (o1) ^ᵖ	5
Number of reverse dies (r)	6	Number of coins (n)	7
Coins per obverse die (n/o)	1.17	Coins per reverse die (n/r)	1.17
Reverse per obverse ratio (r/o)	1	Percentage of singletons (o1) ^ᵖ	83.33 %
Original number of dies (O) (Carter 1983 formula) ^ᵖ	31.91	Coins struck if 20,000 as average productivity per die ^ᵖ	638,200
Original number of dies (O) (Esty 2011 formula) ^ᵖ (O)	42	Survival rate if 20,000 as average productivity per die ^ᵖ	0.00001
Coverage (o = % of O) (Esty 1984 formula) ^ᵖ (o = % of O)	28.57%	Die productivity if survival rate 1/2,000 ^ᵖ	438.73
Weight of silver (in kg) if 20,000 coins per die (O = Carter formula) ^ᵖ	1,787 kg <br /> 1,787 kg	Die productivity if survival rate 1/5,000 ^ᵖ	1,096.83

Papageorgiadou-Banis 1997: 8 coins, 7 obv., 7 rev.

References

^ Papageorgiadou-Banis, Charikleia (1997), The Coinage of Kea, Meletemata 24, Athens, viii, 107 p., 21 pl.
^ Sheedy, Kenneth A. (2006), The Archaic and Early Classical Coinages of the Cyclades, RNS Spec. Publ. 40, London, viii, 261 p., 20 pl.