An enamel and diamond 'serpenti' watch bracelet, by Bulgari. Estimate $100,000 – $150,000.Photo Christie's Image Ltd 2015

Designed as a burgundy and green enamel scaled coiling serpent bracelet, the head with pear-shaped diamond eyes, opening to reveal a watch, with mechanical movement and circular dial, mounted in 18k gold, in a Bulgari black leather pouch. Signed Bulgari, dial signed Vacheron-Constantin Geneve and Bulgari

Christie's. IMPORTANT JEWELS, 20 October 2015, New York, Rockefeller Plaza