Diadumenian (218 AD). AR Denarius. Obv. M OPEL ANT DIADVMENIAN CAES. Bare-headed, draped and cuirassed bust right. Rev. PRINC IVVENTVTIS. Diadumenian standing front, head right, holding standard and sceptre; on right, two standards. RIC IV 102; C. 3. AR. 2.77 g. 20.00 mm. R. Rare and choice example. About EF.