- Year
- 2026
- Condition
- Excellent
- Set
- Box and papers
- Movement
- Self-winding
- Size
- 40.5 mm
Set and condition
Complete set
This Nautilus Annual Calendar, Moon Phases is accompanied by its original presentation box, warranty card and supporting documentation. The watch and included items are inspected by an expert watchmaker before sale. Additional photographs and video of this piece are available on request.
Original presentation box
Original presentation box and packaging.
Original papers
Warranty card and supporting documentation.
Inspected prior to sale
Reviewed for condition, completeness and functionality. Additional details and photographs are available on request.
Condition photography
Additional close-up images of specific areas are available before purchase.
Overview
The Annual Calendar in a steel Nautilus
The Patek Philippe Nautilus Annual Calendar, reference 5726/1A-014, in steel on the steel bracelet, sunburst blue-grey dial with a black-gradient rim. Self-winding calibre 26-330 S QA LU 24H with day, date and month in apertures, moon phases and 24-hour indication; 40.5 mm from 10 to 4 o'clock, 11.3 mm high.
The reference 5726 is the Nautilus with Patek Philippe's Annual Calendar, moon phases and a 24-hour indication, in steel. The case is the porthole construction, 40.5 mm from 10 to 4 o'clock and 11.3 mm high, with a screw-down crown and a sapphire crystal back, and Patek Philippe presents the pairing of the patented calendar with the Nautilus case as the point of the reference.
The self-winding calibre 26-330 S QA LU 24H carries the Annual Calendar, a mechanism Patek Philippe describes as Patek Philippe's own invention and patent, which needs one correction a year. Day, date and month sit in three apertures, with the moon phases and the 24-hour indication read on the dial and a sweep seconds hand. The movement is 33.3 mm across and 5.8 mm high, with 339 parts and 34 jewels, wound by a 21K gold central rotor; it runs at 28,800 semi-oscillations an hour on a Gyromax® balance with a Spiromax® balance spring, for 35 to 45 hours of power reserve, and carries the Patek Philippe Seal.
For collectors
Patek Philippe presents the reference as the sporty version of the Annual Calendar: its patented once-a-year mechanism in the Nautilus's steel case, with the 339-part movement the brand counts beneath the dial. The blue-grey dial is described as taking after the original Nautilus dial; that is Patek Philippe's account.
Key details
Design and engineering
- Porthole caseSteel, 40.5 mm from 10 to 4 o'clock and 11.3 mm high, with case, bezel and bracelet in contrasting polished and satin finishing; screw-down crown, sapphire crystal case back, water-resistant to 30 m.
- Annual CalendarDay, date and month in three apertures, with the moon phases and a 24-hour indication; Patek Philippe describes the mechanism as needing one correction a year and as Patek Philippe's own patent.
- DialSunburst blue-grey with a black-gradient rim, horizontally embossed; white gold applied baton-style hour markers with white luminescent coating and white gold rounded baton-style hands with luminescent coating.
- Bracelet or strapSteel bracelet with the brand's patented fold-over clasp and its lockable adjustment system.
Calibre 26-330 S QA LU 24H
- Self-winding, 21K gold central rotor
- Annual Calendar: day, date and month in apertures; moon phases; 24-hour indication; sweep seconds
- 33.3 mm across, 5.8 mm high; 339 parts, 34 jewels
- 28,800 semi-oscillations per hour (4 Hz), Gyromax® balance, Spiromax® balance spring
- Power reserve 35 to 45 hours
- Patek Philippe Seal
The reference
Technical specifications
| Reference | 5726/1A-014 |
|---|---|
| Collection | Nautilus |
| Calibre | Caliber 26-330 S QA LU 24H |
| Movement | Self-winding |
| Functions | Annual Calendar, Day, date and month in apertures, Moon phases, 24-hour indication, Sweep seconds |
| Case dimensions | 40.5 mm |
| Case thickness | 11.3 mm |
| Case material | Steel |
| Case back | Sapphire crystal case back |
| Water resistance | 30 m |
| Dial | Sunburst blue-gray with black-gradient rim, horizontally embossed, white gold applied baton-style hour markers with white luminescent coating |
| Bracelet | Steel |
| Clasp | Steel patented fold-over clasp |
| Jewels | 34 |
| Power reserve | min. 35 hours – max. 45 hours |
| Frequency | 28,800 semi-oscillations/hour (4 Hz) |
Buying with HYPA
Purchase with confidence
- Original warranty card included, dated 2026
- Free insured delivery within Australia · international quoted
- Payment by bank transfer
- Registered Australian dealerHYPA International Pty Ltd · Registered Victorian second-hand dealer, Registration No. SHD-0018017.
- Direct specialist supportSpeak with the HYPA team before, during and after the purchase.
- Rated 5.0 on Google · 6 reviewsFrom clients of HYPA International on Google. Read the reviews
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