Diocletian (284-305) AE Antoninianus (Bronze 3,52g 22mm) Antioch, 285.
Obv: IMP C C VAL DIOCLETIANVS P F AVG, radiate, draped and cuirassed bust to right
Rev: IOV ET HERCV CONSER AVGG, Jupiter standing to right, holding globe and sceptre, facing Hercules standing to left, holding Victory, club and lion's skin; ΕΔ between, XXI in exergue
Ref: RIC 325