Watch List notes:

George III (1760-1820), Halfpenny, 1773, laureate and draped bust right, rev. Britannia seated left (Peck 904; S.3774), virtually as struck.
provenance
Spink Numismatic Circular, February 1979, no. 1470 - £100 - "Full mint lustre, a beautiful specimen, mint state"
Estimate: £180.00 - £220.00