DIAMOND, SAPPHIRE, SEED PEARL AND ENAMEL LONGCHAIN/WATCH, CIRCA 1910 The case decorated with blue guilloché enamel and calibré-cut sapphires, accented with old brilliant and rose-cut diamonds and terminating in a sapphire cabochon crown, the reverse revealing a round, cream dial, with Arabic hourmarkers within a gold and blue enamel surround, suspended from a seed pearl, enamel and single and rose-cut diamond necklace, mounted in platinum, dial signed J Chaumet Paris London, composite, lengths: watch 3.0cm, necklace 46.5cm For further information on this lot please visit Bonhams.com