Patek Philippe Genève, "Nautilus Jumbo", Movement No. 3172104, Ref. 5712G-001, Cal. 240/164, 40 x 44 mm, circa 2006

A gentleman's automatic Geneva wristwatch in practically mint condition with moon phases, date by hand and power reserve indicator - with original box, original certificate, papers and operating instructions
Case: 18k white gold, glazed push back, 18k PPC white gold deployant clasp. Dial: black-blue. Movm.: gold micro rotorwind movement, Geneva quality hallmark, Gyromax balance.

In 1976 Patek Philippe launched its first Nautilus model. At this time, luxury sports watches are expected to be as thin as possible, so this large watch with its brawny ship's porthole design is completely novel.
The first model of the collection is the Ref. 3700/1; a Swiss patent is awarded for its water-resistant case (up to 120 meters).
Source: www.patek.com