Patek Philippe Nautilus 5726A-001

Reference 5726A-001 Nautilus | A stainless steel automatic annual calendar wristwatch with moon phases and 24 hour indication, Circa 2015 Patek Philippe

Dial: black, ribbed Caliber: cal. 324/303 automatic, 34 jewels Movement number: 5’524’980 Case: stainless steel, sapphire crystal display back Case number: 4'734'314 Closure: stainless steel Patek Philippe double folding clasp Size: 40.5 mm diameter Signed: case, dial and movement Box: yes Papers: no Accessories: Patek Philippe presentation box with outer packaging In 1996, Patek Philippe revolutionized watchmaking by patenting the Annual Calendar complication—a sophisticated mechanism that accounts for the varying lengths of months and requires just one adjustment per year in February. Designed for optimal legibility, the month and day are displayed through two apertures at the top of the dial, while the date, moon phases, and 24-hour indication are elegantly positioned on the lower half. Launched in 2010, Reference 5726 brought the Annual Calendar complication to the iconic Nautilus line, infusing it with a sporty yet refined aesthetic. Initially available exclusively in stainless steel with a leather strap, the model saw an update in 2012 with the introduction of a second variation featuring a stainless steel bracelet and a slightly lighter silvered and anthracite dial. The present example belongs to the original variation and has been meticulously preserved in very good overall condition. This timeless is a superb addition to any collection.