Diadumenian. As Caesar, AD 217-218. AR Denarius (19mm, 3.32 g, 12h). Rome mint. 2nd emission, AD 217-218. Draped and cuirassed bust right / Diadumenian standing slightly left, head right, holding signum and scepter; two signa to right. RIC IV 102; Szaivert series 9-10; RSC 3b. Good VF, toned.