The Patek Philippe Nautilus 5740/1G-001 is the perpetual calendar Nautilus: the most complicated watch in the Nautilus range and, at 8.42 mm, also the thinnest. Introduced at Baselworld 2018 in white gold with a blue dial, it put Patek's ultra-thin calibre 240 Q, the movement from the classic 3940 and 5140 perpetual calendars, inside the Genta sports case for the first time. This guide covers the 5740's specifications and history, what it costs at retail and on the secondary market in 2026, why it is regarded as one of the hardest Pateks to be offered, the Tiffany-stamped examples, and what to check before buying. Bizak & Co. sources the 5740 to order; the Nautilus collection lists the configurations we can seek.
Last reviewed on September 17, 2026. Prices are dated observations, not quotes.
Patek 5740 specifications
| Attribute | 5740/1G-001 |
|---|---|
| Case | 40 mm across the 10 to 4 o'clock axis, 8.42 mm thick; white gold, integrated white gold bracelet with fold-over clasp |
| Movement | Calibre 240 Q, ultra-thin automatic perpetual calendar with 22 ct gold micro-rotor, 3.88 mm thick, 38 to 48 hours power reserve, Patek Philippe Seal |
| Functions | Hours and minutes; day and 24-hour indication at 9; month and leap-year cycle at 3; date and moon phase at 6 |
| Calendar | Perpetual: accounts for month lengths and leap years, needs no correction until 2100 |
| Dial | Blue sunburst with horizontal embossing, applied white gold hour markers with luminous coating |
| Water resistance | 60 m at launch; Patek's unified 30 m rating applies to current listings |
Three subdials give the 5740 the classic Patek perpetual layout, but because the calibre 240 Q is so flat the finished watch is thinner than a steel 5711 with a plain date. That is the engineering point of the reference: a grand complication that wears like a time-only sports watch.
What is the history of the Patek 5740?
Patek marked the Nautilus's 40th anniversary in 2016 with the 5711/1P and 5976/1G limited editions, then followed in March 2018 with the 5740/1G-001 as the first perpetual calendar in the collection. It was launched only in white gold on a bracelet, a deliberate step away from the steel-heavy Nautilus catalogue, and it has stayed that way: no steel, rose gold or strap version has been made. The calibre 240 Q it uses dates from 1985, when Patek introduced it in the 3940, which means the 5740 combines the collection's most modern case with one of its most proven movements.
How much does a Patek Philippe 5740 cost? Prices in 2026
- Retail. US list price sits in the mid US$130,000s to around US$140,000 in 2026. Allocation goes to established boutique clients, and the 5740 is one of the references Patek uses to reward long relationships, so waiting time at retail is measured in years.
- Secondary. Asks for unworn full sets have generally run from around US$200,000 to 280,000 in 2025 and 2026, down from the peak above US$400,000 in early 2022 but well above retail. Earlier examples with worn bracelets sit at the lower end.
- Tiffany-stamped. A handful of 5740/1G-001s were sold through Tiffany & Co. with the double-signed dial; these trade at a substantial premium to the standard dial and appear rarely. Our Tiffany Patek guide covers what the stamp means and how to check it.
These bands describe what we saw across auction results and dealer listings in 2025 and 2026 and will move. Ask for a dated quote for the exact year, condition and papers; our Patek Philippe price guide explains how to compare quotes.
What makes the Patek 5740 so special?
Three things. It is the only perpetual calendar in the Nautilus range, so anyone who wants that complication in that case has one option. It is the thinnest Nautilus made, thinner than the 5711, because the calibre 240 Q measures 3.88 mm. And it is made in small numbers in a precious metal, so it never went through the volume of the steel 5711. Collectors also value that Patek did not dilute it: eight years on, there is still only one 5740 reference.
What is the hardest Patek to get?
At retail, the 5740 is on the short list with the 5811/1G, the 5726/1A-014 and the 5167A. All are allocated rather than sold, and the 5740's higher price does not make it easier: boutiques offer it to clients who have bought several less-demanded pieces first. On the secondary market it is straightforward to find at a price. Our 5711 guide explains how allocation works for the Nautilus range.
5740 vs 5726 vs 5712: which calendar Nautilus?
| 5740/1G | 5726/1A | 5712 | |
|---|---|---|---|
| Calendar | Perpetual, with leap year | Annual, corrected each March | Pointer date only |
| Moon phase | Yes | Yes | Yes |
| Thickness | 8.42 mm | 11.3 mm | About 8.5 mm |
| Metal | White gold only | Steel | Steel (discontinued 2025), rose gold, white gold |
| Retail, 2026 | Mid US$130,000s | High US$50,000s | US$60,000s to 90,000 for gold |
The 5740 is the complete calendar; the 5726 gives most of the display for well under half the money; the 5712 is the moon phase without the calendar. Our 5726 guide and 5712 guide cover the other two.
Buying a 5740: what to check
- Papers. The Certificate of Origin cannot be reissued and an Extract from the Archives is only available for watches sold more than ten years ago, so a 2019 5740 without papers stays without papers until 2029. Our serial number check guide explains the numbers.
- Calendar setting. Have the seller advance the date, day, month, leap-year cycle and moon with the case correctors and confirm each jumps cleanly. Never set a perpetual calendar between 8 pm and 4 am.
- Bracelet. White gold links wear faster than steel; check for stretch, clasp wear and mismatched link finishing that suggests replaced links.
- Case finishing. Sharp transitions between the brushed bezel top and polished chamfers; softened edges mean polishing.
- Tiffany claims. A Tiffany stamp adds a large premium, so verify it against the Certificate of Origin, which names the retailer; a stamp without matching paperwork is not worth the premium.
- Price against the band. A 5740 offered well under the market is the single most reliable warning sign.
Our authentication process describes what we inspect before dispatch.
Quick answers
How much does a Patek Philippe 5740 cost?
Retail is in the mid US$130,000s to around US$140,000 in 2026. Secondary asks for unworn full sets have run roughly US$200,000 to 280,000 in 2025 and 2026.
What makes the Patek 5740 so special?
It is the only perpetual calendar Nautilus, the thinnest Nautilus made at 8.42 mm thanks to the calibre 240 Q, and it is produced in small numbers in white gold only.
What is the history of the Patek 5740?
Launched at Baselworld in March 2018 as the first perpetual calendar in the Nautilus range, in white gold on a bracelet. It uses the calibre 240 Q, introduced in the 3940 in 1985. No other metal or strap version has been made.
What is the hardest Patek to get?
At retail, the 5740/1G, 5811/1G, 5726/1A-014 and 5167A are all allocated to established clients rather than sold. On the secondary market all are available at a price.
What movement is in the 5740?
Calibre 240 Q, an ultra-thin automatic perpetual calendar with a 22 ct gold micro-rotor, 3.88 mm thick, 38 to 48 hours of power reserve.
Request a Nautilus 5740 sourcing quote
Tell us the preferred year range, condition and whether original papers are required, plus your budget and timing, through our sourcing enquiry form. We confirm the specific watch, photographs, papers and final price before you commit. See the 5740/1G-001 catalogue page, browse the Nautilus collection or sell or trade your 5740.
Related reading: Nautilus 5726 annual calendar guide · Nautilus 5712 guide · Nautilus 5990 Travel Time Chronograph guide · 5811/1G-001 review · Tiffany Patek guide · Patek reference numbers explained.
0 comments