George III 1817 Half-Sovereign AU58 first year of issue

George III (1760-1820), gold Half-Sovereign, 1817, engraved by Benedetto Pistrucci, laureate head right, date below, Latin legend GEORGIVS III DEI GRATIA, raised rim both sides, rev. crowned shield of arms, dot below, REX FID: DEF: BRITANNIARUM, weight 3.99g (Marsh 400; S.3786). A nice example with good residual mint lustre, graded by NGC as AU58.