Watch List notes:

Diadumenian, as Caesar, 217-218. Dupondius (Orichalcum, 25 mm, 12.94 g, 12 h), Rome, summer 217-early 218. M OPEL ANTONINVS DIADVMENIANVS CAES Bare-headed, draped and cuirassed bust of Diadumenian to right. Rev. PRINC IVVENTVTIS / S C Diadumenian, as prince of the youth, standing front in military attire, head to right, holding signum in his right hand and scepter in his left; to right, two signa. BMC 159. Clay issue 2. Cohen 8. RIC 212. A lovely coin with a splendid portrait. Very fine.