Watch Guides
Patek Philippe Buying Guide: Nautilus, Aquanaut and Calatrava
· 3 min read
Patek Philippe is the watchmaker collectors aspire to. Its watches set auction records, its sports models have waiting lists measured in years, and its slogan – that you never actually own one, you merely look after it for the next generation – is as much a promise about value as about craft.
Here is how the collection is structured, which references matter, and how to buy one with confidence.
Geneva since 1839
Antoine Norbert de Patek founded the company in Geneva in 1839 with François Czapek; the French watchmaker Adrien Philippe, inventor of a keyless winding system, joined in 1845. Since 1932 the company has been owned by the Stern family, and it remains one of the last fully independent, family-owned Genevan manufactures.
Every Patek Philippe mechanical watch carries the Patek Philippe Seal, the company's own quality standard introduced in 2009, which covers the whole watch – movement finishing, precision and after-sales service – rather than the movement alone.
The collections
| Collection | Introduced | Character |
|---|---|---|
| Nautilus | 1976 | Gérald Genta's porthole-shaped luxury sports watch; integrated bracelet, horizontally embossed dial |
| Aquanaut | 1997 | A younger, sportier sibling with a rounded octagonal case and "tropical" composite strap |
| Calatrava | 1932 | The purist's dress watch, descended from the Reference 96 |
| Complications | – | Annual calendars, chronographs, world times – everyday complications, beautifully finished |
| Grand Complications | – | Perpetual calendars, minute repeaters, tourbillons; the summit of the house |
The Nautilus in detail
The original Nautilus, reference 3700/1A, launched in 1976 in steel at a time when a steel watch from a great house was a provocation. Its descendants define modern collecting:
- 5711/1A – the time-and-date steel Nautilus that became the most in-demand watch of its era. Patek discontinued it in 2021, ending with a limited edition in Tiffany blue.
- 5811/1G – its successor from 2022, in white gold with a 41 mm case.
- 5712, 5726, 5980, 5990 – Nautilus models with power reserve and moon phase, annual calendar, chronograph and travel time. Often better value than the 5711 for a comparable presence on the wrist.
- Ladies' Nautilus 7118 – a 35 mm Nautilus in steel, gold or with diamonds.
Reading a Patek Philippe reference
Patek references are written as a four-digit number followed by a suffix, for example 5711/1A-010. The number identifies the model; the letters after the slash identify the metal – A for steel (acier), J for yellow gold (jaune), R for rose gold, G for white gold (gris), P for platinum – and a "/1" means the watch comes on a metal bracelet. The final three digits identify the dial variant.
Buying a Patek Philippe
- Papers and extracts – a full set adds value; Patek can also issue an Extract from the Archives confirming a watch's original specification.
- Service history – a recent Patek service is a plus; ask what was done.
- Condition – sharp case edges matter on the Nautilus and Aquanaut, whose brushed and polished surfaces are hard to restore without softening.
- The seller – every Patek on Montévane is checked by our specialists before it ships, with a full refund if an independent check ever disagrees.
At the time of writing (November 2026), Patek Philippe watches on our Patek Philippe page ranged from $15,200 for classic Calatrava and Aquanaut references to $2,975,900 for the rarest complications.
Shop the guide
Frequently asked questions
Why was the Patek Philippe 5711 discontinued?
Patek Philippe ended the steel 5711/1A in 2021 after 15 years, finishing with a limited Tiffany-blue edition. The white-gold 5811/1G followed in 2022.
What does the A or G in a Patek reference mean?
It is the case metal: A for steel, J for yellow gold, R for rose gold, G for white gold and P for platinum. "/1" indicates a metal bracelet.
Is the Aquanaut a good alternative to the Nautilus?
Yes. It shares the Nautilus's sporty spirit with a more contemporary design and is usually easier to find and less expensive.
What is the Patek Philippe Seal?
Patek Philippe's own quality standard, introduced in 2009. It covers the finishing and precision of the whole watch as well as service, and appears on every mechanical Patek.
