Watch List notes:

Diadumenian, as Caesar, 217-218. Denarius (Silver, 19 mm, 3.53 g, 6 h), Rome, summer 217-early 218. M OPEL ANT DIADVMENIAN CAES Bare-headed, draped and cuirassed 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 85. Clay Issue 2. Cohen -. RIC 102. Struck from somewhat worn dies, otherwise, about extremely fine.