Patek Philippe Calatrava Ref 4819 a lady's 18ct white gold wristwatch circa 1992. Dial: white. Calibre: quartz. Case number: 2927728. Case: 18ct white gold circular, hobnail bezel, snap-on case back. Closure: black leather strap, Patek Philippe18ct white gold buckle. Dimensions: 25 mm. Accessories: Prestige watch Repairs, Sydney certificate of authenticity