Watch List notes:

Rome,
Diadumenian (Caesar, 217-218),
ROME,
Denarius, 3.14g, Rome, draped and cuirassed bust right, rev. Diadumenian standing left, holding baton and sceptre, two standards behind, the baton touching the I in PRINC, PRINC. IVVENTVTIS (RIC 107).
toned, small spots of verdigris, very fine to extremely fine.