Seleukid Coins
Demetrios III

| Identification Number DE3-AE-01 | |
| Mint: | Damaskos1 |
| Period: | 97/6 - 88/7 BC (probably 96/5 BC) |
| Denomination: | AE Half Unit |
| Weight: | 6.13 g |
| Diameter: | 19 - 20 mm |
| Obverse: | Diademed, bearded head of Demetrios III right; dotted border |
| Reverse: | ‘ΒΑΣΙΛ[ΕΩΣ] ΔΗΜΗΤΡ[ΙΟΥ] [ΘΕ]ΟΥ’ right, ‘ΦΙΛΟΠΑΤΟΡΟ[Σ] ΣΩΤΗΡΟ[Σ]’ left (“of King Demetrios the God, the Father-loving, the Saviour”); naked Hermes standing left, holding caduceus2 in left hand and palm in right hand; control mark in outer left field partially off flan, Seleukid date in exergue nearly off flan (probably Ζ[ΙΣ], i.e. year 217 of the Seleukid Era = 96/5 BC)3, control mark in exergue, if any, illegible or off flan; dotted border |
| Die Position: | c. -20º |
| References: | Houghton, CSE, 863 (date off flan); Newell, LSM, 118; SNG Spaer, 2840 - 2844 |
1 One of the most important cities of Syria and probably the oldest city in the world.
2 The staff carried by Hermes, the messenger of the gods, as a symbol of peace. It was carried by Greek ambassadors and heralds in time of war signifying their inviolability. It was originally depicted as a rod or olive branch ending in two shoots and decorated with garlands or ribbons; in later iconography the garlands became two snakes and a pair of wings was attached to the staff to represent Hermes’ speed. Caduceus is the Latin form of Greek κηρυκειον, which means a herald’s wand (κηρυξ = a herald). (Peck, Harpers Dictionary of Classical Antiquities - Caduceus; Britannica Concise Encyclopedia from Encyclopedia Britannica - Caduceus)
3 The Seleukid Era is based on a lunar calendar, beginning with the autumn of 312 BC. It means that if x is a Seleukid year (and x<312) then the corresponding BC time interval is from 313–x to 312–x.
The beginning of the Seleukid Era was set as follows: In 311 BC, shortly after capturing Babylon, Seleukos I Nikator began the enumeration of his satrapal years there. However, after his decisive victory over Antigonos Monophthalmos in 307/6 BC, he backdated his “fictitious” first regnal year to coincide with Nisanu 1, 311 BC (New Year’s Day in the Babylonian calendar). This marked the antedated epoch of the Seleukid calendar according to the Babylonian reckoning. Later in 305/4 BC, when Seleukos I took the diadem and assumed the royal title “King”, he retained the numbering of his regnal years in Babylon but employed the Makedonian calendar and thus pushed his accession year back to Dios, 312 BC (Dios was the first month of the Makedonian calendar; it corresponds to October-November). This became the antedated epoch of the Seleukid era on the Macedonian calendar. (Assar, Recent Studies in Parthian History, Part I, p. 6)
The Seleukid Era was used at least until the first century AD in some Eastern countries.