Watch List notes:

Cappadocia, Caesarea. Diadumenian. As Caesar, A.D. 217-218. Æ assarion (18.3 mm, 4.61 g, 11 h). Very Rare. M OP DIAD YV (or similar), bare head right / MHTP KAICA, Apollo seated left on Mt. Argaeus, holding branch, hand on hip. Unpublished in standard references. near Fine. 

Ex Alex Malloy collection.