Pre-Owned Patek Philippe Nautilus Date Moon Phases (5712R001) self - winding automatic watch, features a 40mm 18k rose gold case surrounding a black-brown dial on a brown alligator strap with an 18k rose gold deployant buckle. Functions include hours, minutes, small seconds, date, moon phase and power reserve indicator. This watch comes with the original box and warranty. We back this watch with a 2-Year Watchbox warranty!