Watch List notes:

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 102. C. 3. AR. g. 2.69 mm. 20.00 R. Rare. A little porous and gently smoothed. VF.