Seleukid Kings of Syria, Seleukos I Nikator (312-281 BC) AR Tetradrachm (Silver, 26mm, 19.97g) Seleukeia on the Tigris I, after circa 300.
Obv: Head of Herakles to right, wearing lion skin headdress.
Rev: BAΣIΛEΩΣ - ΣEΛEYKOY Zeus seated left on low throne, holding long scepter in his left hand and eagle standing right with closed wings in his right; to left, M; below throne, ΔΙ.
Ref: SC 119.9b.