Watch List notes:

George III (1760-1820), Pattern silver Halfcrown, 1817. Small laureate head right, top right leaf points to upright of E, date below, Latin legend and toothed border surrounding, GEORGIUS III DEI GRATIA, rev. struck en medaille, crowned escutcheon of the Arms of Hanover at center of crowned quartered shield of arms with garnished frame, WWP incuse on left garnish for Mint Master William Wellesley Pole, W incuse on right garnish for engraver Thomas Wyon Jnr., buckled garter motto surrounding in French, HONI. SOIT. Q MAL. Y. PENSE. Latin legend and toothed border surrounding commences bottom left, BRITANNIARUM REX FID: DEF: edge milled, weight 14.12g (Bull 2108 R4; ESC 627 R4; Davies 65; cf KM 672). Attractively toned, a few tiny spots, practically as struck, extremely rare, in NGC holder graded PF 63, Pop 1; the only example graded at both services. Estimated Value $6,750

Ex Harrington E Manville, collection of patterns and proofs, purchased by Spink and Son Ltd 1984.
Ex Herman Selig Collection, part II, Coins of George III, Spink Coin Auction 131, 2nd March 1999, lot 1214.
Ex Nihon Coin Auction, Tokyo, Japan, March 2009, lot 2047.

NGC certification 2722100-009.