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

Two row cultured pearl, sapphire and diamond set necklace, the uniform pearls with gold bead and sapphire bead spacers, to a circular 18ct gold mounted cluster clasp, the central pearl bordered by brilliants, within outer border of round mixed-cut sapphires, cultured pearls and further brilliants, maker’s mark LDV, pearl lengths 40cm and 36.5cm respectively. £1200-1500