Koinon of Macedonia. AE27 semi-sutonomous issue, AD 238-244. 13.34 g. 

ALEXANDROY, Diademed head of Alexander right, coiled serpent beneath neck
KOINON MAKEDONWN B NEW, Athena seated left holding patera, resting left arm on shield. 

AMNG III-I 628; Mionnet I, 617.

With permission of cngcoins.com, auction 158, Lot 176, Feb 2007.