Alexandria (Ptolemy VI), silver, tetradrachms (Ptolemy I/eagle on thunderbolt) (165-154 BCE)

Die Studies Database

SILVER ID ^ᵖ: 9519

165 BCE - 154 BCE Silver 63,853 kg

Description

Obverse:	Head of Ptolemy I Soter to right, wearing diadem and aegis around neck.
Reverse:	ΠΤΟΛΕΜΑΙΟΥ ΣΟΤΗΡΟΣ (Greek).Eagle standing to left on thunderbolt.

Mint and issuing power

Mint:

Alexandria

Ancient region:

Egypt

Modern country: Egypt

Authority:

Ptolemy I Soter (satrap and Ptolemaic king of Egypt, 323-305 BC), Ptolemy VI Philometor (Ptolemaic king, 180-145 BC)

Chronology

From

165 BCE

to

154 BCE

Period: Hellenistic 323-30 BC

Physical description

Metal:

Silver

Median weight in grams

14.10

Denomination:

tetradrachm

Standard:

Ptolemaic

Image

]]S 670 - Alexandria Tetradrachm 165-154 BC (Olivier 2012, Planche XL, 3759).png

References

Die study reference:	"[[Die study reference" contains a listed "[" character as part of the property label and has therefore been classified as invalid.]]1Olivier 2012, p. 178-198, n° 3675-4354
Coin series reference:	"[[Coin series reference" contains a listed "[" character as part of the property label and has therefore been classified as invalid.]]2Svoronos 1904-1908, n° 1502

Obverse dies distribution

Frequency ᵖ	Number of obverses ᵖ (o)	% (o)	Number of coins (n)	% (n)	Die name
4	17	8.99	68	10	5, 12, 16, 19, 22, 45, 54, 62, 68, 69, 70, 71, 75, 110, 121, 173, 182
5	9	4.76	45	6.62	6, 28, 41, 42, 58, 142, 143, 150, 183
6	9	4.76	54	7.94	40, 51, 53, 64, 65, 89, 90, 107, 184
7	10	5.29	70	10.29	1, 13, 39, 49, 97, 116, 147, 151, 152, 158
8	5	2.65	40	5.88	29, 32, 46, 79, 159
10	3	1.59	30	4.41	154, 188, 189
11	2	1.06	22	3.24	171, 175
12	1	0.53	12	1.76	146
13	1	0.53	13	1.91	60
14	1	0.53	14	2.06	4
15	2	1.06	30	4.41	24, 163
17	1	0.53	17	2.5	178
18	1	0.53	18	2.65	63
1	63	33.33	63	9.26	2, 7, 8, 11, 14, 17, 20, 31, 34, 35, 36, 44, 47, 52, 55, 56, 61, 67, 77, 78, 84, 85, 86, 87, 88, 92, 94, 96, 100, 101, 104, 105, 106, 109, 111, 112, 113, 114, 115, 118, 122, 124, 125, 126, 127, 131, 133, 135, 136, 139, 141, 153, 155, 156, 161, 165, 166, 170, 177, 179, 180, 185, 186
2	38	20.11	76	11.18	9, 10, 18, 21, 23, 25, 30, 37, 38, 43, 50, 72, 73, 74, 76, 80, 81, 93, 98, 99, 103, 117, 119, 120, 128, 129, 130, 132, 138, 145, 148, 149, 157, 162, 167, 168, 169, 174
3	21	11.11	63	9.26	3, 26, 33, 48, 57, 59, 66, 83, 91, 95, 102, 108, 134, 137, 140, 144, 160, 164, 176, 181, 187
9	5	2.65	45	6.62	15, 27, 82, 123, 172
Total	189 of 189	100.01	680 of 680	99.99

Reverse dies distribution

no distribution is available

Quantification

Number of obverses ᵖ (o)	189	Number of singletons (o1) ᵖ	63
Number of reverse dies (r)		Number of coins (n)	680
Coins per obverse die (n/o)	3.6	Coins per reverse die (n/r)
Reverse per obverse ratio (r/o)		Percentage of singletons (o1) ᵖ	33.33 %
Original number of dies (O) (Carter 1983 formula) ᵖ	226.43	Coins struck if 20,000 as average productivity per die ᵖ	4,528,600
Original number of dies (O) (Esty 2011 formula) ᵖ (O)	261.75	Survival rate if 20,000 as average productivity per die ᵖ	0.00015
Coverage (o = % of O) (Esty 1984 formula) ᵖ (o = % of O)	90.74%	Die productivity if survival rate 1/2,000 ᵖ	6,006.27
Weight of silver (in kg) if 20,000 coins per die (O = Carter formula) ᵖ	63,853 kg <br /> 63,853 kg	Die productivity if survival rate 1/5,000 ᵖ	15,015.68

Remarks

Likely military

The reverses have not been counted