Diocletian AD 284-305 AE Antoninianus 
IMP C VAL DIOCLETIANVS AVG - Radiate bust right, cuirassed Rev: IOVI CONSERVAT - Jupiter standing front, head turned to the right, holding thunderbolt and sceptre. Exe: (gamma) \ XXIT Ticinum mint: AD 288 = RIC Vii, 232, page 244 - Cohen 1923.47g.