Patek Philippe Nautilus 40.5 mm PP5726W1 Steel White

The Patek Philippe Nautilus 5726/1A-010 is a definitive expression of haute horlogerie dressed in a sporting soul. Introduced as a complication variant of the iconic Nautilus family, the reference 5726 elevates the line's celebrated architecture by adding an annual calendar with moon phase display — one of Patek Philippe's most admired complications — to the instantly recognizable porthole-shaped case. Owning a 5726/1A-010 means possessing a watch that sits at the intersection of athletic design and grand complication watchmaking, a combination that very few manufacturers in the world can credibly claim.

The case measures 40.5mm in stainless steel and retains every hallmark of Gerald Genta's original 1976 Nautilus design: the rounded octagonal bezel with its characteristic horizontal grooves, the embossed dial pattern, and the seamlessly integrated bracelet that flows directly from the lugs. The domed stainless steel bezel frames the white dial beautifully, and the alternating brushed and polished surfaces of both the case and bracelet create the nuanced play of light that collectors find so compelling in person. At 40.5mm, the watch wears with authority on the wrist without sacrificing the understated elegance Patek Philippe is known for.

The white dial of this 5726/1A-010 is a study in legibility and refinement. Applied index markers catch the light cleanly, providing instant readability, while the moon phase aperture and annual calendar subdials add visual depth without cluttering the composition. The moon phase display — a hallmark of Patek Philippe's astronomical complications — is rendered with the precision and craft expected of the Manufacture, and the annual calendar mechanism requires only one manual correction per year, making it as practical as it is beautiful.

Powering the 5726/1A-010 is a Patek Philippe automatic movement, delivering the reliable, high-precision timekeeping for which the Manufacture has earned its unrivaled reputation over nearly two centuries. Patek Philippe movements are assembled, decorated, and regulated entirely in-house in Geneva, and each watch undergoes rigorous quality control before leaving the Manufacture. The result is a movement worthy of being worn and passed down through generations — one of Patek Philippe's own enduring promises to its owners.

For the collector or first-time Patek Philippe buyer, the Nautilus 5726/1A-010 represents a compelling acquisition on every dimension: iconic design pedigree, meaningful complication, stainless steel desirability, and the global prestige of the Nautilus name. Brand-new examples with full box and papers are exceptionally rare in today's market, making this listing at Bizak & Co. a singular opportunity. Contact our team at bizakandco.com to learn more, confirm availability, or begin the purchase process — we are committed to making your acquisition of this extraordinary timepiece seamless and fully authenticated.