Watch List notes:

George III (1760-1820), Pattern Shilling, 1778, by Richard Yeo, struck on a heavier flan, stop after gratia, intermediate laureate, draped and cuirassed bust right, rev. inverted die axis, crowned shields cruciform, edge plain, 6.52g (cf. Clark 491; cf. Slaney II, 510; cf. ESC 2169 [R3] {cf. 1240}; S-), once cleaned, nevertheless retaining some residual brilliance, extremely fine thus, coin alignment not recorded by Bull for the heavier flan issue, very rare.
provenance
Spink Numismatic Circular, October 1995, no. 5641 - £1,000
Estimate: £1200 - £1500