Jewellery, Watches and Objects of Vertu to include the personal archive of Louis Osman, goldsmith and architect

A George III gold memorial ring, the black enamel band inset with gold lettering reading ‘HENRY LONSDALL.ARM OB 25 FEB 1781 AE 53’, between milled borders, shank double struck with maker’s mark ‘JW’, ring size Q. £260-300: