Sidon (Ptolemy II), gold, trichrysa (275-274 BCE)

275 BCE - 274 BCE Gold 55,264 kg

Obverse:	Diademed head of Ptolemy I to right, wearing aegis around neck
Reverse:	ΠΤΟΛΕΜΑΙΟΥ ΒΑΣΙΛΕΩΣ (Greek).Eagle, with closed wings, standing l. on thunderbolt, in l. field, ΣΙ

Phoenicia

275 BCE

274 BCE

Period: Hellenistic ^{323-30 BC}

Gold

17.85

trichryson

Ptolemaic

Die study reference:	"[[Die study reference" contains a listed "[" character as part of the property label and has therefore been classified as invalid.]]1Roche-Lévêque 2023, p. 39
Coin series reference:	"[[Coin series reference" contains a listed "[" character as part of the property label and has therefore been classified as invalid.]]2CPE I, n° 504
Coin series web reference:	https://numismatics.org/pco/id/cpe.1 1.504

no distribution is available

Number of obverses ^ᵖ (o)	7	Number of singletons (o1) ^ᵖ	4
Number of reverse dies (r)	9	Number of coins (n)	11
Coins per obverse die (n/o)	1.57	Coins per reverse die (n/r)	1.22
Reverse per obverse ratio (r/o)	1.29	Percentage of singletons (o1) ^ᵖ	57.14 %
Original number of dies (O) (Carter 1983 formula) ^ᵖ	15.48	Coins struck if 20,000 as average productivity per die ^ᵖ	309,600
Original number of dies (O) (Esty 2011 formula) ^ᵖ (O)	19.25	Survival rate if 20,000 as average productivity per die ^ᵖ	0.00004
Coverage (o = % of O) (Esty 1984 formula) ^ᵖ (o = % of O)	63.64%	Die productivity if survival rate 1/2,000 ^ᵖ	1,421.19
Weight of silver (in kg) if 20,000 coins per die (O = Carter formula) ^ᵖ	55,264 kg <br /> 55,264 kg	Die productivity if survival rate 1/5,000 ^ᵖ	3,552.97

Most likely one single workstation Likely military

References

^ Roche-Lévêque, Augustin (2023), “και τα τρίχρυσα”. Etude numismatique et historique des trichrysa ptolémaïques", Revue Numismatique, 180, p. 9-59.
^ Lorber, Catharine C. (2018), Coins of the Ptolemaic empire : Part I. Ptolemy I through Ptolemy IV, 2 vol., New York.