λA George III gold and tortoiseshell portrait snuff box

λA George III gold and tortoiseshell portrait snuff box,

the miniature by Richard Cosway, R.A (1742-1821),

oval form, gold mounts and hinge, the mount with a wavy-edge border, scroll thumb-piece, the hinged cover inlaid with a spray of vari-coloured flowers, the inside of the hinged cover set with a portrait miniature of Lady Margaret Heathcote, wearing pearls in a pink silk dress trimmed in black lace, holding her dog enamelled to border 'married 22 June 1749, died 19 Aug 1769', length 8.5cm.