George III (1760-1820), New coinage, Pattern Crown, 1817, by W. Wyon, in silver, laureate draped bust right, rev. crowned garnished shield, incorrupta fides veritasque, frosted lettering both sides, edge plain, 28.92g/12h (L & S 159; ESC 229; Selig 1184). Some friction on obverse high points, otherwise about as struck, toned, very rare £10,000-15,000