Watch List notes:

Diadumenian, as Caesar, Denarius struck under Macrinus, Rome, AD 217-218
AR (g 3,28; mm 21; h 12)
M OPEL ANT DIADVMENIAN CAES, draped and cuirassed bust r., Rv. PRINC IVVENTVTIS, Diadumenian standing front, head r., holding sceptre and standard; on r., two standards. RIC 102; C 3.
Scarce. Beautiful portrait, cabinet tone, about extremely fine.