An 18 Karat Yellow Gold Ref. 2573/2 Calatrava Wristwatch, Patek Philippe for Hausmann & Co., 33.00 mm case diameter, matte silver dial signed PATEK PHILIPPE HAUSMANN & CO., applied gold baton numerals, gold pencil hands, subdial for seconds at 6 o'clock, polished bezel, embossed Calatrava symbol on crown, snap on case back, Cal. 10-200 manual wind 18 jewel movement adjusted to heat, cold, isochronism and five positions stamped with the Geneva seal and signed PATEK, PHILIPPE & Co., vintage black whale skin strap, 18 karat yellow gold Patek, Philippe & Co. tang buckle.Movement number: 790114.Case number: 429313.