Alexander III, AR Tetradrachm, 27 mm, 17.2 g. Pella mint. Posthumous issue, struck under Kassander 317-305 BC. 

Head of Herakles right, wearing lionskin headdress.
ALEXANDROY, Zeus seated left, right leg drawn back, holding eagle and sceptre.

Boeotian shield in left field, coiled serpent with head left  beneath the chair.

Price 249; Müller 754; SNG Cop 728.

With permission of cngcoins.com, auction 406, Lot 199, Sept. 2017.
Ex CNG auction 72 (June 2006), lot 307; ex Seleucus I Hoard (CH X, 265).