Alexander III, AR tetradrachm. Lampsakos mint. Posthumous issue, struck ca 280-275 BC, 31 mm, 17.25 g. 

Head of Herakles right, wearing lionskin headdress.
ALEXANDROY, Zeus seated left, right leg drawn back, holding eagle and sceptre. 
WAS monogram over forepart of Pegasus left in left field. KA monogram beneath throne.

Price 1448; Mueller 917.

With permission of Roma Numismatics Ltd - E-Sale 84, Lot 791, June 2021.