Citium (Ptolemy V), silver, tetradrachms (Ptolemy I/eagle on thunderbolt) (191-181 BCE)
From SILVER
191 BCE - 181 BCE Silver 1,571 kg
Description
| Obverse: | Head of Ptolemy I Soter to right, wearing diadem and aegis around neck. |
| Reverse: | ΠΤΟΛΕΜΑΙΟΥ ΒΑΣΙΛΕΩΣ (Greek).Eagle standing to left on thunderbolt. In field, date (and club, caduceus or aplastron). |
Mint and issuing power
Chronology
| From | 191 BCE | to | 181 BCE | Period: Hellenistic 323-30 BC 
|
Physical description
| Metal: | Silver
|
Median weight in grams | 14.10 | Denomination: | tetradrachm
|
Standard: | Ptolemaic |
Image
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. 86-87, n° 1071-1080 | ||
| 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° 1362-1363, 1365, 1369-1370 | ||
Obverse dies distribution
| Frequency ᵖ | Number of obverses ᵖ (o) | % (o) | Number of coins (n) | % (n) | Die name |
| 1 | 2 | 50 | 2 | 20 | 202, 205 |
| 3 | 1 | 25 | 3 | 30 | 203 |
| 5 | 1 | 25 | 5 | 50 | 204 |
| Total | 4 of 4 | 100 | 10 of 10 | 100 |
Reverse dies distribution
no distribution is available
Quantification
| Number of obverses ᵖ (o) | 4 | Number of singletons (o1) ᵖ | 2 |
| Number of reverse dies (r) | 7 | Number of coins (n) | 10 |
| Coins per obverse die (n/o) | 2.5 | Coins per reverse die (n/r) | 1.43 |
| Reverse per obverse ratio (r/o) | 1.75 | Percentage of singletons (o1) ᵖ | 50 % |
| Original number of dies (O) (Carter 1983 formula) ᵖ | 5.57 | Coins struck if 20,000 as average productivity per die ᵖ | 111,400 |
| Original number of dies (O) (Esty 2011 formula) ᵖ (O) | 6.67 | Survival rate if 20,000 as average productivity per die ᵖ | 0.00009 |
| Coverage (o = % of O) (Esty 1984 formula) ᵖ (o = % of O) | 80% | Die productivity if survival rate 1/2,000 ᵖ | 3,590.66 |
| Weight of silver (in kg) if 20,000 coins per die (O = Carter formula) ᵖ | 1,571 kg <br /> 1,571 kg | Die productivity if survival rate 1/5,000 ᵖ | 8,976.66 |
Remarks
Most likely one single workstation
References
- ^ Olivier, Julien (2012), Archè et Chrèmata en Egypte au IIe siècle avant J.-C. (204-81 av. J.-C.). Etude de numismatique et d'histoire, [Unpublished doctoral dissertation], Orléans University, 2012.
- ^ Svoronos, Ioannes N. (1904-1908), Τὰ νομίσματα τοῦ κράτους τῶν Πτολεμαίων (Ta nomismata tou kratous tōn Ptolemaiōn - The coins of the Ptolemaic rulers), Athens, 4 v., 68 pl.
