Patrai, Achaia, AE trichalkon, ca. 45-40 BC. Magistrate Aristarchos, son of Damon. 

Cista mystica within wreath
APICTAPXOC DAMWNOC, PATR monogram in field, Dionysos 
standing half left, holding thyrsos over shoulder and 
raising right hand. Caduceus in right field.

Hunter 2; BCD Peloponnesos 517.

with permission of cngcoins.com, Mail Bid Sale 81, Lot 2190, May 2009