Watch List notes:

Diadumenian, as Caesar, 217-218. Denarius (Silver, 21 mm, 3.47 g, 12 h), Rome, summer 217-early 218. M OPEL ANT DIADVMENIAN CAES Bare-headed and draped bust of Diadumenian to right. Rev. PRINC IVVENTVTIS Diadumenian standing front, head to right, holding signum in his right hand and scepter in his left; to right, two signa. BMC 87. Clay Issue 2. Cohen 3. RIC 102. Good very fine.