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

A 19th century citrine and pearl stickpin, the tapered cushion-shaped mixed-cut citrine, within a tapered surround of graduated half pearls, mounted in yellow gold, with detachable stickpin fitting, stickpin head 19.5mm x 18mm. £160-200