Pattern Half-sovereign, 1816, by Thomas Wyon, large laureate bust right, similar to that of the regular Sixpence, GEOR III D:G: BRITT: REX: F:D, rev. a rose, shamrock, and thistle growing upon a single stem, large crown above rose, BRITANNIARUM REX FID:DEF: edge straight-grained, 3.96g. (Montagu 561; Murdoch 196; Nobleman 57 [this coin]; Douglas-Morris 134 [this coin]), struck on a faulty blank, the obverse surface is heavily striated, otherwise extremely fine, exceedingly rare

Details
Pattern Half-sovereign, 1816, by Thomas Wyon, large laureate bust right, similar to that of the regular Sixpence, GEOR III D:G: BRITT: REX: F:D, rev. a rose, shamrock, and thistle growing upon a single stem, large crown above rose, BRITANNIARUM REX FID:DEF: edge straight-grained, 3.96g. (Montagu 561; Murdoch 196; Nobleman 57 [this coin]; Douglas-Morris 134 [this coin]), struck on a faulty blank, the obverse surface is heavily striated, otherwise extremely fine, exceedingly rare
Provenance
Baron Philippe de Ferarri La Renotiere, Sotheby, 27 March 1922, lot 57
V M Brand, dispersed post mortem from 1932
Capt. K J Douglas-Morris, Sotheby, 26 November 1974, lot 134