Alexander III. AR Tetradrachm. Uncertain Greek or Macedonian mint. 310-275 BC. 27mm, 16.91 g. 

Head of Herakles right, wearing lionskin headdress.
BASILEWS ALEXANDROY to left and right Zeus seated left, holding eagle and sceptre.
Helmeted head of Athena right in left field, M in circle beneath chair.

Price 881 = Prowe 586; (Egger Sale 1912) (this coin).