Watch List notes:

The Roman Empire
Diadumenianus caesar, 217 – 218

Sestertius 217-218, Æ 21.06 g. M OPEL ANTONINVS DIADVMENIANVS CAES Draped and cuirassed bust r. Rev. PRINC IVVENTVTIS Diadumenian standing facing, head r., holding standard and sceptre; on r., standard and legionary eagle; in exergue, S C. C 7. BMC 154 var. (legionary eagle and standard) .
RIC 211. Very rare. Green patina and very fine