Alexander III AR Didrachm. Amphipolis mint. Struck 336-323 BC. 

Head of Herakles right, wearing lionskin headdress.
ALEXANDROY, Zeus seated left, legs parallel, holding eagle and sceptre. Rooster standing left in left field. 

Price 80; Prokesch-Osten I, 277 = Berlin 18250333; BMC 2002,0101.42.

Image courtesy of the British Museum.