Watch List notes:

BRITISH 18th CENTURY TOKENS, William Allen, Copper Halfpenny, 1795, obv shield of arms, WILLIAM ALLEN LONDON . 1795 . around, rev shield of arms and crest between branches, PROMISSORY HALFPENNY around, edge PAYABLE IN LANCASTER [L]ONDON OR BRISTOL (D&H Middlesex 246, edge unlisted; Davisson as D&H Middlesex 246c). Good extremely fine with some underlying colour, exceptionally rare, no other specimen traced.
ex Clements Collection
ex F S Cokayne Collection, acquired 31 December 1936 for 35/-

Estimate: £70-90