Cos, silver, hemidrachms (Heracles/crab & club) (280-250 BCE)

Die Studies Database

SILVER ID ^ᵖ: 1564

280 BCE - 250 BCE Silver 1,241 kg

Description

Obverse:	Head of Heracles right, wearing Nemean lion skin headdress.
Reverse:	(ΚΩΙΟΝ) (Greek).Crab. Beneath, club. In the field, magistrate name.

Mint and issuing power

Mint:

Cos

Ancient region:

Caria (islands)

Modern country: Greece

Authority:

Chronology

From

280 BCE

to

250 BCE

Period: Hellenistic 323-30 BC

Physical description

Metal:

Silver

Median weight in grams

1.50

Denomination:

hemidrachm

Standard:

Image

]]RQEM_ad_293.png "Paris, BnF, Y 23880 (https" has not been listed as valid URI scheme.[Paris, BnF, Y 23880 (https://gallica.bnf.fr/ark:/12148/btv1b85232363)]

References

Die study reference:	"[[Die study reference" contains a listed "[" character as part of the property label and has therefore been classified as invalid.]]1Ingvaldsen 2002, p. 264-277 (series XIII)
Coin series reference:
Coin series web reference:	https://greekcoinage.org/iris/id/cos stefanaki 2012 7.21 http://hno.huma-num.fr/browse?idType=1193 http://hno.huma-num.fr/browse?idType=1194 http://hno.huma-num.fr/browse?idType=1875

Obverse dies distribution

Frequency ᵖ	Number of obverses ᵖ (o)	% (o)	Number of coins (n)	% (n)	Die name
1	9	23.08	9	3.45	1, 4, 8, 14, 15, 18, 20, 36, 39
2	9	23.08	18	6.9	2, 5, 11, 13, 19, 23, 29, 32, 38
3	3	7.69	9	3.45	12, 24, 28
4	1	2.56	4	1.53	25
5	1	2.56	5	1.92	21
6	1	2.56	6	2.3	6
7	1	2.56	7	2.68	26
8	1	2.56	8	3.07	27
9	1	2.56	9	3.45	37
10	2	5.13	20	7.66	7, 34
11	2	5.13	22	8.43	16, 31
12	1	2.56	12	4.6	9
13	1	2.56	13	4.98	22
14	3	7.69	42	16.09	17, 30, 35
17	1	2.56	17	6.51	10
20	1	2.56	20	7.66	33
22	1	2.56	22	8.43	3
Total	39 of 39	99.96	243 of 261	93.11

Reverse dies distribution

no distribution is available

Quantification

Number of obverses ᵖ (o)	39	Number of singletons (o1) ᵖ	9
Number of reverse dies (r)	83	Number of coins (n)	261
Coins per obverse die (n/o)	6.69	Coins per reverse die (n/r)	3.14
Reverse per obverse ratio (r/o)	2.13	Percentage of singletons (o1) ᵖ	23.08 %
Original number of dies (O) (Carter 1983 formula) ᵖ	41.36	Coins struck if 20,000 as average productivity per die ᵖ	827,200
Original number of dies (O) (Esty 2011 formula) ᵖ (O)	45.85	Survival rate if 20,000 as average productivity per die ᵖ	0.00032
Coverage (o = % of O) (Esty 1984 formula) ᵖ (o = % of O)	96.55%	Die productivity if survival rate 1/2,000 ᵖ	12,620.89
Weight of silver (in kg) if 20,000 coins per die (O = Carter formula) ᵖ	1,241 kg <br /> 1,241 kg	Die productivity if survival rate 1/5,000 ᵖ	31,552.22

Remarks