An 18 Karat White Gold and Diamond Ref. 4906G 'Calatrava' Wristwatch, Patek Philippe for Tiffany & Co., the bezel containing 96 round brilliant cut diamonds weighing approximately 0.85 carat total, 28.00 mm case diameter, mother-of-pearl dial signed PATEK PHILIPPE TIFFANY & Co., applied diamond and white gold Arabic numerals, white gold feuille hands, date aperture at 3 o'clock, screw on case back, quartz movement, black satin strap signed PATEK PHILIPPE, 18 karat white gold tang buckle signed PATEK PHILIPPE. Case back stamp: (Swiss hallmarks) 750 PPCo. Clasp stamp: (Swiss hallmark) PPCo. 750. Accompanied by booklets, inner case and outer box signed PATEK PHILIPPE. Estimate 7,000-9,000