Alexander III, AR Tetradrachm. Posthumous issue. Methymna mint, struck 188-180 BC. 25 mm, 16.77 g. 

Head of Herakles right, wearing lionskin headdress.
ALEXANDROY, Zeus seated left, one leg drawn back, holding eagle and sceptre. 
Arion, holding lyre, on a dolphin, all above a prow in left field. IDH and RXA monograms in exergue.

Price 1695 var (monograms); Mueller 982 var (ditto). 

With permission of Jean Elsen & ses Fils S.A. auction 93, Lot 231, Sept 2007.