Flan crack.
Greece
Parthian Kingdom, Vologases IV (147-191 AD), Drachm 147-191 AD, Ekbatana mint
Obverse: bust of bearded king with tiara with star, facing left
Reverse: Arsakes (the first Parthian king) on the throne right, bow in hand, Λ below throne
ΒΑΣΙΛΕΩΣ ΜΕΓΑΛΟΥ ΑΡΣΑΚΟΥ ΘΕΟΠΑΤΡΟΥ ΝΙΚΑΤΟΡΟΣ
Diameter 19 mm, weight 3.14 g