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Patek Philippe Nautilus 40.5 mm 5726/1A0011 Steel Black
  • Patek Philippe Nautilus 40.5 mm 5726/1A0011 Steel Black
Patek Philippe Nautilus 40.5 mm 5726/1A0011 Steel Black

Patek Philippe Nautilus 40.5 mm 5726/1A0011 Steel Black

$80,909.00 $86,999.00

*As with all fine timepieces, prices and availability are subject to market conditions and do not constitute a binding agreement.

By Patek Philippe

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Patek Philippe Nautilus 40.5 mm 5726/1A0011 Steel Black

Patek Philippe Nautilus 40.5 mm 5726/1A0011 Steel Black

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Patek Philippe Nautilus 40.5 mm 5726/1A0011 Steel Black

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Patek Philippe Nautilus 40.5 mm 5726/1A0011 Steel Black · $

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The Patek Philippe Nautilus 5726/1A-001 is a certified authentic used 40.5mm stainless steel luxury sports watch featuring a striking black dial with annual calendar and moonphase complications, index dial markers, and a domed stainless steel bezel. Powered by a Patek Philippe automatic movement, this reference pairs refined horological complexity with the iconic integrated steel bracelet that defines the Nautilus lineage.

The 5726/1A-001 stands apart from the standard Nautilus lineup as one of the most coveted complication references in the entire collection, uniting the annual calendar and moonphase display in a wearable 40.5mm package that transitions effortlessly from boardroom to weekend. Contact Bizak & Co. today to inquire about this exceptional piece or browse our curated selection of pre-owned Patek Philippe watches for sale online.

Compare it across every Nautilus reference we carry, or browse the full Patek Philippe collection at Bizak & Co.

Buy this Nautilus, trade in your current watch, or sell us yours. Contact Bizak & Co. to make an offer or request a fair-market valuation.

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The Patek Philippe Nautilus 5726/1A-001 is among the most distinguished references in the celebrated Nautilus family, combining the brand's mastery of annual calendar and moonphase complications within the instantly recognizable tonneau-octagonal case that Gerald Genta designed for Patek Philippe. Measuring 40.5mm in stainless steel, the 5726 occupies the precise sweet spot of the Nautilus sizing spectrum, offering commanding wrist presence without sacrificing comfort or wearability across a full day.

The black dial of reference 5726/1A-001 is executed with the meticulous attention to finish that collectors expect from the Geneva manufacture. Index dial markers catch the light with quiet authority, while the subdials for the annual calendar — displaying date, day, and month — and the moonphase aperture are integrated into the dial architecture with a harmony that never feels cluttered. This is a watch whose complexity reveals itself gradually, rewarding the attentive eye rather than announcing itself loudly.

The annual calendar complication is one of Patek Philippe's signature achievements: it correctly accounts for months of 30 and 31 days automatically, requiring only a single manual correction per year at the end of February. Paired with the moonphase display, the 5726 becomes a complete representation of timekeeping at its most poetic, marrying astronomical observation with mechanical precision in a sports watch format that remains eminently practical.

The stainless steel domed bezel and the fully integrated stainless steel bracelet are hallmarks of the Nautilus identity, and on the 5726/1A-001 they serve double duty — underscoring the watch's sporty DNA while providing a refined finish appropriate for the most formal occasions. The screw-down crown contributes to the watch's water resistance of 30 meters, and the overall build quality reflects Patek Philippe's exacting standards for case finishing, with alternating polished and satin surfaces that define depth and dimension.

For collectors and enthusiasts looking to buy a pre-owned Patek Philippe Nautilus 5726/1A-001 online, Bizak & Co. offers certified authentic examples selected for quality and integrity. As a trusted luxury watch dealer, Bizak & Co. provides the expertise and confidence you deserve when investing in a horological icon. Reach out to our team to learn more about this reference, discuss provenance, or explore comparable Nautilus pieces available in our current inventory.
Technical Details

Reference Number 5726/1A-001

Model Family Nautilus

Movement Automatic

Case Material Stainless Steel

Bracelet Material Stainless Steel

Dial Black

Case Dimension 40mm

Year 2025

Condition Pre-Owned

Box & Papers Full Set

FAQ

1. What makes the Patek Philippe Nautilus 5726/1A-001 special?
The Nautilus 5726/1A-001 is exceptional because it combines the iconic Nautilus sports watch design with two sophisticated complications — the annual calendar and the moonphase — in a single 40.5mm stainless steel case. It is one of the most technically accomplished and visually refined references in the entire Nautilus collection, and its combination of complexity and wearability makes it highly sought after by serious collectors.

2. What movement powers the Patek Philippe Nautilus 5726/1A-001?
The 5726/1A-001 is powered by a Patek Philippe automatic movement, consistent with the brand's commitment to in-house mechanical excellence. Patek Philippe automatic movements are renowned for their precision, reliability, and finishing quality, all of which are hallmarks of the Geneva Seal standard to which the manufacture adheres.

3. What is the case size of the Nautilus 5726/1A-001?
The Nautilus 5726/1A-001 features a 40.5mm stainless steel case, making it one of the larger references in the Nautilus line and ideally suited for wrists that appreciate a commanding but not oversized presence. The case is fitted with a screw-down crown and a domed stainless steel bezel that echoes the original Nautilus aesthetic.

4. Is the Patek Philippe Nautilus 5726/1A-001 suitable for everyday wear?
The Nautilus 5726/1A-001 is designed to be a versatile luxury sports watch, equally at home in formal and casual settings, and its stainless steel construction and integrated bracelet are built for regular wear. With 30 meters of water resistance it handles everyday exposure confidently, though it is best appreciated as a refined daily companion rather than a dedicated dive or sports instrument.

5. What does the black dial of the Nautilus 5726/1A-001 look like?
The black dial features clean index dial markers and is organized to display the annual calendar — day, date, and month — alongside a moonphase aperture, all integrated with Patek Philippe's characteristic dial balance and restraint. The result is a sophisticated and legible face that reads as classic and contemporary at the same time.

6. Is the Patek Philippe Nautilus 5726/1A-001 a good investment, and how can I buy one from Bizak & Co.?
The Nautilus 5726/1A-001 is widely regarded as one of the most desirable references in the pre-owned luxury watch market, combining the prestige of the Nautilus name with the added value of annual calendar and moonphase complications in a stainless steel case. To purchase this certified authentic used example or to ask questions about condition and provenance, contact Bizak & Co. directly through bizakandco.com, where our team of knowledgeable specialists is ready to assist you.

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