Watch List notes:

Tokens, Scotland, Ayrshire, [Col. W. Fullarton], halfpenny, 1797, bust of William Wallace, helmeted with dragon crest, rev. Scotia with laurel wreath, cipher TC in exergue (DH.3), good extremely fine, a bronzed proof
*ex Baldwin's vault
The initials stand for Troon (Canal) Company, a project of Fullarton at the time.
(150-200 GBP)