Diocletian. 284-305 AD. AE, Bronze Antoninianus. Siscia. RIC V pt. 2, 263; Cohen 42. EF, silvered. Choice portrait. $75.00. Diocletian. 284-305 AD. Æ Antoninianus (4.13 gm). Struck Click for Larger Image 289/90 AD. Siscia mint. IMP C C VAL DIOCLETIANVS P F AVG, radiate and cuirassed bust right / CONSERVATOR AVGG, Diocletian and Jupiter standing vis à vis sacrificing over tripod and each holding sceptre; B/XXI•O•. RIC V pt. 2, 263; Cohen 42. EF, silvered. Choice portrait. Estimate $75.