Watch List notes:

Diadumenian. As Caesar, AD 217-218. AR Antoninianus (21.5mm, 4.65 g, 12h). Rome mint. 1st emission of Macrinus, AD 217. Radiate and draped bust right / Diadumenian standing left, holding baton and scepter; aquila and signa to right. RIC IV 106 (Macrinus); Clay Issue 1; RSC 11a. Toned, roughness, minor scratch. VF.

From the Brian Holland Collection. Ex Pegasi XXIV (5 April 2011), lot 540.