Diocletian, Potin tetradrachm of Alexandria, Egypt, Year 4. 8.0 gr, 19.0mm, 287-288 AD. Obv: A K G OVA DIOKLHTIANOC CEB, laureate, draped and cuirassed bust right. Rev: Nike advancing right, holding wreath and palm across left shoulder, L-D across fields, star in right field. Milne 4878; Dattari 5729; BMC 2517; SNG Cop 989. Contributed by Online Store of the Forum Ancient Coins.