Seleukid Kingdom. Seleukos I Nikator, As satrap, ca.321-315 BC. AR Tetradrachm (22mm, 16.90g). In the name of Philip III of Macedon. Babylon (II) mint. Struck circa 318/7-315 BC. Head of Herakles right, wearing lion skin / Zeus Aëtophoros seated left; monogram in left field, Z below throne. SC Ad43.5; Duyrat Group V, Series 6 (Arados); Price P147 (Arados); cf. HGC 9, 11.