Watch List notes:

Diadumenian. As Caesar, AD 217-218. AR Denarius (21mm, 3.24 g, 6h). Rome mint. 2nd emission of Macrinus, AD 217-218. Bareheaded and draped bust right / Diadumenian standing slightly left, head right, holding signum and scepter; two signa to right. RIC IV 102 (Macrinus); Clay Issue 2; RSC 3. Lightly toned, some porosity. Near EF. A superb example of the type.

From the Conti Collection. Ex Helianthus annuus Collection (Gemini XII, 11 January 2015), lot 390; Morton & Eden 68 (11 June 2014), lot 103; M. Trenerry FPL (May 2009), no. W49 (and cover coin).