Watch List notes:

ANCIENT COINS, ROMAN, Mint of Rome unless otherwise stated, Diadumenian (AD 218), Silver Denarius, struck as Caesar, AD 217-218, M OPEL ANT DIADVMENIAN CAES, draped bust facing right, rev PRINC IVVENTVTIS, Diadumenian standing facing, head right, holding standard and sceptre, two further standards on right, 3.07g, 6h (RIC 102; C 3; RCV 7449). A little softly-struck on the reverse as usual, good portrait, about extremely fine, lightly toned.
from the Evan Salholm collection
ex Spink Numismatic Circular, June 2000, 2226

Estimate: £200-250