S 194 - Siphnos, silver, tetrobols (475-460 BCE)

Die Studies Database

SILVER ID ^ᵖ: 9395

475 BCE - 460 BCE Silver 696 kg

Description

Obverse:	Diademed head of Apollo right.
Reverse:	ΣΙΦ (Greek).Eagle flying right, grain ear before.

Mint and issuing power

Mint:

Siphnos

Ancient region:

Cyclades

Modern country: Greece

Authority:

Chronology

From

475 BCE

to

460 BCE

Period: Classical 480-323 BC

Physical description

Metal:

Silver

Median weight in grams

3.80

Denomination:

tetrobol , drachma

Standard:

Image

]]S 194 - Siphnos, silver, tetrobols (475-460 BCE).jpg [1]

References

Die study reference:	"[[Die study reference" contains a listed "[" character as part of the property label and has therefore been classified as invalid.]]1Sheedy 2006, p. 179-180, no. 20-27.
Coin series reference:

Obverse dies distribution

Frequency ᵖ	Number of obverses ᵖ (o)	% (o)	Number of coins (n)	% (n)	Die name
1	3	50	3	23.08	16, 17, 18
2	2	33.33	4	30.77	14, 19
6	1	16.67	6	46.15	15
Total	6 of 6	100	13 of 13	100

Reverse dies distribution

no distribution is available

Quantification

Number of obverses ᵖ (o)	6	Number of singletons (o1) ᵖ	3
Number of reverse dies (r)	4	Number of coins (n)	13
Coins per obverse die (n/o)	2.17	Coins per reverse die (n/r)	3.25
Reverse per obverse ratio (r/o)	0.67	Percentage of singletons (o1) ᵖ	50 %
Original number of dies (O) (Carter 1983 formula) ᵖ	9.16	Coins struck if 20,000 as average productivity per die ᵖ	183,200
Original number of dies (O) (Esty 2011 formula) ᵖ (O)	11.14	Survival rate if 20,000 as average productivity per die ᵖ	0.00007
Coverage (o = % of O) (Esty 1984 formula) ᵖ (o = % of O)	76.92%	Die productivity if survival rate 1/2,000 ᵖ	2,838.43
Weight of silver (in kg) if 20,000 coins per die (O = Carter formula) ᵖ	696 kg <br /> 696 kg	Die productivity if survival rate 1/5,000 ᵖ	7,096.07

Remarks