Billon Antoninianus of Diocletian RIC 184

Billon Antoninianus (21mm 3.52g) Struck 291 A.D.Rome

Obv: IMP DIOCLETIANVS AVG Radiate draped and cuirassed bust right

Rev VIRTVS AVGG Hercules standing, head left, holding club and trophy  in exergue

RIC Vii184