ATTICA. Athens. Ca. 154/3 BC. Silver "New Style" tetradrachm (16.68 gm). 

Head of Athena Parthenos right, wearing thunderbolt earring and crested Attic helmet ornamented with four horse heads on visor, Pegasus above raised ear flap, and vegetative tendrils on neckpiece.
AQE, owl standing three quarters right on fallen amphora, HAPY monogram in left field, in right field FYG monogram above caps of Dioscuri in right field, all in olive wreath. 

Thompson 64. 

Re-used by permission of Freeman & Sear - Gemini I, Session 1, Lot: 136, Jan 11-12, 2005.