Diocletian, AE antoninianus, Lyons, AD 291-292.

IMP DIOCLETIANVS AVG, radiate bust left, wearing imperial 
mantle.
IOVI AVGG, Jupiter standing left, holding Victory on globe and sceptre, eagle at foot left.
Mintmark A.

RIC V-2 28; Cohen 152.

Contributed by Richard of CarpeDiem Numismatics, October, 2018.