Gold, diamond, sapphire & enamel Watch no. 300568

Case: Dial: Movement: Provenance: 19?? - Haas Neveux, Geneve 2009 - Christie's, 10 Jun 2009, est $2-3,000, sold $3,750, "HAAS. AN 18K GOLD, DIAMOND, ENAMEL AND SAPPHIRE OPENFACE KEYLESS LEVER PENDANT WATCH SIGNED HAAS, RETAILED BY TIFFANY & CO. CASE NO. 300568, CIRCA 1910 HAAS. AN 18K GOLD, DIAMOND, ENAMEL AND SAPPHIRE OPENFACE KEYLESS LEVER PENDANT WATCH SIGNED HAAS, RETAILED BY TIFFANY & CO. CASE NO. 300568, CIRCA 1910 Nickel-finished lever movement, 17 jewels, bi-metallic compensation balance, silvered matte dial, Breguet numerals, gold case with translucent gray-blue enamel over engine-turning, back centered by filigree surround set with rose-cut diamonds and sapphires, translucent gray-blue enamel tri-foil bow, case and movement signed by maker, dial signed by retailer 28mm diam."