Watch List notes:

DIADUMENIAN AS CAESAR, (A.D. 217-218), AE as, Rome mint, issued A.D. 217-218, (13.34 g), obv. bare headed bust of Diadumenian draped to right, around traces of M OPEL ANTONINVS DIADVMENIAN CAES, rev. around PRINC IVVENTVTIS, SC in exergue, Diadumenian standing to left holding standard in right hand, two standards to right (S.7456, RIC 212, C.9, BMCRE 159). Dark green toning, surface roughness, very fine and rare.