Watch List notes:

Oliver Cromwell, halfcrown, 1658 (S.3227A). Light grey iridescent toning, proof-like virtually mint state, choice uncirculated and rare, one of the finest known.

Ex J.P.Melick Collection, private purchase from Spink Australia, 17th July, 1980 ($5,000) & Noble Numismatics Sale 118 (lot 1353).