Patek Philippe Nautilus Perpetual Calendar 5740/1G-001

About This Watch

The Patek Philippe Nautilus Perpetual Calendar 5740/1G-001 is one of the thinnest perpetual calendar watches in existence at just 8.42mm thick, a remarkable achievement that places a grand complication within the Nautilus's famously slim profile. The caliber 240 Q uses a micro-rotor design that sits within the movement rather than on top of it, saving precious millimeters. The perpetual calendar displays are elegantly integrated into the blue-black gradient dial with horizontal embossing: day and month in apertures below 12 o'clock, date via a hand on a subsidiary dial, and moon phase at 6 o'clock. A leap year indicator sits at 4:30. The 18k white gold case and integrated bracelet provide a subtle precious-metal upgrade over the discontinued steel Nautilus models. The perpetual calendar mechanism will correctly track dates, including leap years, until the year 2100 without requiring manual correction. To have this level of horological sophistication in a watch thin enough to slip under any shirt cuff is an extraordinary engineering achievement. The 5740 is produced in extremely limited quantities and commands substantial premiums on the secondary market, representing the pinnacle of the Nautilus collection.