Gents Patek Philippe Cabriolet with 18k pink gold tank case with 18k white gold stripes on lid lugs on leather strap with tang buckle Manual. Ref 5099. Circa 1999. Fine Pre-owned Patek Philippe Watch. Certified pre-owned Classic Patek Philippe Cabriolet 5099 watch on a Tan Gold Strap band with a 18k rose gold tang buckle. This Patek Philippe watch has a 28 x 28 mm case with a Square caseback and Gold breguet dial.