Athens, Greece, New Style Silver Tetradrachm, 129-128 BC. 30mm, 16.9gm.

Obverse:  Helmeted head of Athena right

Reverse: AQE DIO-GE POSE DHMH, Owl standing right on amphora, IB on 
amphora, ME in exergue, to left: Dionysos standing left, holding 
thyrsos and cup.

Thompson 414b

With permission of Rusty Romans on Vcoins, April 2011