Watch List notes:

Diadumenian, as caesar (Macrinus, 217-218), As, Rome, AD 217-218; AE (g 13,35; mm 25; h 6); M OPEL ANTONINVS DIADVMENIANVS CAES, draped bust r., Rv. PRINC I[VVENTVTI]S, Diadumenian standing l., head r., holding sceptre and standard; on r., two standards; in ex. S C. RIC 212; C 9.
Rare, large flan, dark patina, about extremely fine / very fine.