Watch List notes:

Diadumenian. As Caesar, AD 217-218. AR Denarius (20mm, 2.94 g, 6h). Rome mint. 2nd emission of Macrinus, July AD 217-March AD 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, granular surfaces.