Mysia, Pergamon (Mid-late 2nd century BC) AE (Bronze, 17mm, 3.45g)
Obv: Head of Athena to right, wearing crested Attic helmet decorated with a star on the bowl.
Rev. AΘΗΝΑΣ - [Ν]ΙΚΗΦΟΡΟΥ Owl standing right on thunderbolt, head facing.
Ref: BMC 187-188.