Diadumenian. As Caesar, AD 217-218. AR Denarius (20mm, 3.00 g, 7h). Rome mint. 2nd emission of Macrinus, AD 217-218. Bareheaded and draped bust right / Diadumenian standing right, holding aquila and scepter; aquila and signum to right. RIC IV 102; Clay Issue 2; RSC 3. VF, toned, porous, reverse off center.