Alexander III, AR Tetradrachm. Posthumous issue. Uncertain mint in Greece or Macedonia, struck ca. 310-275 BC. 25 mm, 17 g. 

Head of Herakles right, wearing lionskin headdress.
ALEXANDROY, Zeus seated left, one leg drawn back, holding eagle and sceptre. 
Dolphin swimming downwards in left field, GL monogram  beneath the throne, LTI monogram in exergue.

Price 856. 

With permission of cngcoins.com, Triton IX, Lot 770, Jan. 2006.