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

An 18ct gold diamond and sapphire hinged bangle, the narrow hinged bangle channel set to the front with slightly graduated brilliant-cut diamonds to one side and calibré-cut sapphires to the other, mounted in polished yellow gold, bearing UK import marks for 18ct gold, internal bangle width 60mm. £400-600