Watch List notes:

USA Proof Sets (16) 1957, 1958 the Half Dollar with some toning, 1961, 1962, 1963 (2, one still sealed), 1964 (3, two still sealed), 1978S, 1979S type I, 1980S (2), 1981S (3) nFDC to FDC some of the later sets with light toning

Estimate: 70-110 GBP