Alexander III, AR Tetradrachm. Posthumous issue. Methymna  mint, struck 215-200 BC. 25 mm, 16.35 g. 

Head of Herakles right, wearing lionskin headdress.
ALEXANDROY, Zeus seated left, right leg drawn back, holding eagle and sceptre. 
IX and IM monograms above Arion, holding lyre, on dolphin right in left field.

Price 1691-1694 var (monograms). 

With permission of cngcoins.com, Mail Bid Sale 79, Lot 162, Sept. 2008.