Megalopolis, Achaian League issue, AE20. Tetrachalkon, ca 180-150 BC. 3.79 g. 

Zeus standing left, holding Nike and sceptre, traces of
legend behind.
AXAIWN MEGALOPAN AGIW, Achaia seated left, holding wreath and sceptre.

Type of BMC 166; Warren ("The Bronze Coinage of the Achaian 
Koinon"), 422 (this coin); Clerk 77.

With permission of cngcoins.com, Sept 2007.