Y A George III tortoiseshell snuff box with portrait medallion by Richard Cosway (1742-1821), the gentleman wearing a blue coat, his hair powdered, and set into a waisted gold mounted and lined box, the oval mount and thumbpiece of chased design, 2.5 cm high, 8 cm wide, 5.5 cm deep, Provenance: Philip Mould & Company, London, 2013