Diadumenian, as Caesar, 217-218. Sestertius (Orichalcum, 31 mm, 25.66 g, 1 h), Rome. [M] OPEL ANTONINVS DIADVMENIANVS CAES Bare-headed, draped and cuirassed bust of Diadumenian to right. Rev. PRINC IVVENTVTIS / S C Diadumenian, as Princeps Iuventutis standing facing, his head turned to right, holding signum in his right hand and scepter with his left; to right, two signa. Banti 4. BMC (Macrinus) 150 var. Cohen 7. RIC 211 var. ( differing bust type ). Dark brown surfaces. Edge split, details and legends slightly strengthened, otherwise, nearly very fine.