Watch List notes:

Diadumenian (218 AD). AR Denarius. Obv. M OPEL ANT DIADVMENIAN CAES. Draped bust right, head bare. Rev. PRINC IVVENTVTIS. Diadumenian, in military dress, standing left, holding baton and spear; behind, two standards. RIC IV 108. AR. g. 2.63 mm. 20.00 Scarce. Good VF/About EF.