Watch List notes:

Diadumenian. As Caesar, AD 217-218. AR Denarius (21mm, 3.02 g, 12h). Rome mint. 2nd emission of Macrinus, AD 217-218. Bareheaded and draped bust right / Diadumenian standing left, holding aquila and scepter; two signa to right. RIC IV 102; Clay Issue 2; RSC 3. Toned. Good VF.