Watch List notes:

Halfcrowns (21) William III date worn, 1816, 1817 Small Head, 1834 WW in block, 1850, 1879, 1881, 1887 Jubilee Head (2), 1888, 1890, 1892, 1894, 1898, 1899 (3), 1948, 1950, 1953, 1967, the 20th Century issues EF to UNC, earlier coins VG to Near Fine

Estimate: 90-150 GBP