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

A small collection of antique stickpins, including a half pearl and old brilliant-cut diamond round cluster stickpin, with detachable fitting, an irregular carnelian pebble stickpin, a pear-shaped cabochon turquoise stickpin, in gold collet setting and four small pins with variously gem set terminals, cased. £260-300