Watch List notes:

Diadumenian. As Caesar, AD 217-218. AR Denarius (19.5mm, 3.05 g, 6h). Rome mint. 1st emission of Macrinus, AD 217. Bareheaded, draped, and cuirassed bust right / Diadumenian standing left, holding baton and scepter; aquila and signum to right. RIC IV 108 (Macrinus); Clay Issue 1; RSC 14a. VF, toned, minor porosity.

Ex J. Eric Engstrom Collection (Classical Numismatic Group Electronic Auction 370, 9 March 2016), lot 480, purchased from Ancient Gens, New Canaan, CT, 1973.