PATEK PHILIPPE WORLD TIME Reference: 5131J-001. Serial number: 5530350 18k yellow gold case. Enamelled dial depicting a world map. Automatic mechanical movement (Calibre 240 HU). Leather strap with signed gold folding clasp. Diameter: 39.5 mm. Dial, case and movement signed. The watch comes with its case and papers. Gross weight: 91.9 g. A very fine 18K gold, world map dial, automatic movement wristwatch, by Patek Philippe.