Diocletian (284-305) AE Antoninianus (Bronze, 3.35g 22mm) Tripolis, 285-290.
Obv: Radiate, draped and cuirassed bust of Diocletian right, seen from front
Rev: emperor standing facing, head right, scepter in left hand, receiving with right Victory on globe from Jupiter standing facing, head left, scepter in left hand; TR in lower middle field, XXI (pellet ?)in exergue.
Ref: RIC.328