The Audemars Piguet Royal Oak and the Patek Philippe Nautilus are the two integrated-bracelet steel sports watches that every other one is measured against, both drawn by Gérald Genta four years apart, and the choice between them in 2026 comes down to shape, size, availability and price: the Royal Oak is the more angular watch, made in more sizes and metals, still available new in steel as a time-and-date reference, and cheaper on the secondary market; the Nautilus is the softer, rarer shape, no longer made in steel as a three-hander, and the more expensive of the two by a wide margin. This comparison sets the two lines side by side reference by reference, covers how each wears, their dials and movements, dated prices in September 2026, value retention, which to buy for which wrist and budget, and what to check before buying either. Bizak & Co. sources both to order; the Royal Oak collection and the Nautilus collection show the references we can seek.
Last reviewed on September 21, 2026 by Filip Biczak. Prices are dated observations, not quotes.
Royal Oak vs Nautilus at a glance
| Audemars Piguet Royal Oak | Patek Philippe Nautilus | |
|---|---|---|
| Launched | 1972, reference 5402ST, 39 mm | 1976, reference 3700/1A, 42 mm |
| Designer | Gérald Genta | Gérald Genta |
| Case | Octagonal bezel with eight hexagonal screws; brushed and polished bevels | Rounded octagon with "ears" at 3 and 9; two-piece monobloc case on current references |
| Current sizes | 34, 37, 39 and 41 mm, plus chronograph and complication cases | 35.2 mm (7118), 40 to 41 mm (5711, 5811, 5712, 5726), 40.5 mm chronographs |
| Dial | Tapisserie, a cut checkerboard in Petite, Grande or Méga sizes | Horizontal embossed grooves, usually blue or black with a gradient |
| Water resistance | 50 m | 120 m on time-and-date models; 60 m on the 5712 |
| Metals | Steel, titanium, yellow, rose and white gold, platinum, ceramic, sand gold | Steel, rose and white gold, platinum, and two-tone on some references |
Sources: the Audemars Piguet watch collection and the Patek Philippe Nautilus collection for the current references and specifications.
Which Royal Oak matches which Nautilus?
| Role | Royal Oak | Nautilus |
|---|---|---|
| The original proportions, time and date | 16202ST "Jumbo" extra-thin: 39 mm, about 8.1 mm thick, calibre 7121, 55 hours, launched 2022 to replace the 15202 | 5811/1G: 41 mm, about 8.2 mm thick, calibre 26-330 S C, white gold only, launched 2022 to replace the steel 5711/1A |
| Everyday time and date | 15510ST: 41 mm, about 10.4 mm thick, calibre 4302, 70 hours, steel, five dial colours | None in steel; the discontinued 5711/1A (40 mm, calibre 324 S C then 26-330 S C) is the pre-owned answer |
| Smaller wrist | 15550ST: 37 mm, calibre 5900, steel; 34 mm 77450 series | 7118: 35.2 mm, mostly rose or white gold, some with diamonds |
| Complication | Royal Oak perpetual calendar, openworked and tourbillon references, mostly precious metal or ceramic | 5712/1A power reserve, date and moon phase, calibre 240, steel; 5726/1A annual calendar, steel |
| Chronograph | 26240ST: 41 mm, calibre 4401 flyback, 70 hours, steel; 26331ST earlier version | 5990/1A travel time chronograph, 40.5 mm, calibre CH 28-520 C FUS, steel; 5980/1R chronograph in rose gold |
The Royal Oak side of the table is fuller in steel; the Nautilus side is fuller in complications. That is the practical difference for a buyer: if you want steel and simple, the Royal Oak is the only current option; if you want a moon phase or an annual calendar in a steel sports case, the Nautilus is.
How do they wear?
Both watches wear wider than their diameter because the bracelet flows straight from the case, and both sit flat. The 39 mm 16202ST and the 41 mm 5811 are within a tenth of a millimetre of each other in thickness and both slip under a shirt cuff; the 16202ST reads smaller on the wrist because its bezel is narrower. The 41 mm 15510ST is a noticeably taller watch at about 10.4 mm and reads larger than the 5811 despite the same diameter, because of the wide bezel and the visible screws. The Royal Oak bracelet is the more articulated and has a smaller taper; the Nautilus bracelet has a stronger taper and a fold-over clasp with a Patek-designed adjustment. Owners with wrists under about 16.5 cm usually prefer the 16202ST, the 15550ST or the 7118; above that either 41 mm reference works. Both bracelets show wear at the link pins and neither has a tool-free extension.
Dials, finishing and legibility
The Royal Oak dial is Tapisserie, a raised checkerboard cut on a pantograph machine from a hand-engraved master, with applied gold markers and a date at 3; the pattern catches light from every angle and the watch changes character through the day. The Nautilus dial is stamped with horizontal grooves and finished with a gradient, usually blue on the current 5811 and black-blue on the 5711, with applied markers and a date at 3; it is the quieter dial and the easier to read at a glance. Case finishing is exceptional on both, with polished bevels against brushed flats, and both lose value when refinished badly. The Royal Oak's exposed bezel screws are its signature and its weakness: they mark, and misaligned screws after a service are a common complaint.
Movements
The 16202ST uses AP's calibre 7121, a 3.2 mm automatic with 55 hours of reserve that replaced the 2121, itself the Jaeger-LeCoultre-derived movement the original Royal Oak and Nautilus shared. The 15510ST uses the calibre 4302, a modern 70-hour automatic with a 22 ct gold rotor and a stop-seconds function. The 5811 and the late 5711 use Patek's calibre 26-330 S C, a 3.3 mm automatic with a stop-seconds and a redesigned date mechanism, with a reserve of 35 to 45 hours; the 5712 uses the 240 PS IRM C LU, a micro-rotor movement of 3.98 mm with a power reserve indicator and moon phase. All are finished to haute horlogerie standards and shown through sapphire casebacks; Patek's finishing is slightly more traditional in style, AP's slightly more architectural. None is externally certified; Patek applies its own Seal.
Royal Oak vs Nautilus prices in 2026
The table shows Bizak's sourced catalogue asks on September 21, 2026, all sourced to order. Asks, not sales, and they move.
| Reference | Bizak catalogue ask, 21 Sep 2026 |
|---|---|
| Royal Oak 15510ST, 41 mm steel | US$53,457 grey, US$54,590 silver, US$56,650 black, US$59,740 green, US$70,555 blue, brand new |
| Royal Oak Chronograph 26331ST, steel | US$51,500 |
| Royal Oak 15202OR extra-thin, rose gold | US$119,480 |
| Royal Oak 16202OR, rose gold; 16202XT, titanium | US$150,535; US$207,029 |
| Nautilus 5712/1A-001, steel | US$89,100 |
| Nautilus 5990/1A-001 and 5990/1A-011, steel | US$124,063 and US$164,799 |
| Nautilus 5711/1A-010, steel, discontinued | US$152,440 |
| Nautilus 5811/1G-001, white gold | US$212,175 |
| Nautilus 7118/1300R-001, rose gold, 35.2 mm | US$277,451 |
In steel, a Nautilus costs one and a half to three times the equivalent Royal Oak; in gold the gap narrows but the Nautilus remains dearer. The Audemars Piguet price guide and the Patek Philippe price guide track each reference.
Which holds its value better?
The Nautilus, in steel. The 5711/1A has been the most valuable production steel sports watch since Patek announced its discontinuation in 2021, and the 5712 and 5990 trade at multiples of retail. The steel Royal Oak also trades above retail but at a lower multiple, and because AP makes more of them it fell further in percentage terms from the 2022 peak. In precious metals both trade closer to retail. A buyer who wants the safer store of value buys the Nautilus; a buyer who wants more watch for the money buys the Royal Oak.
Which should you buy?
- Steel, time and date, buying new or recent. Royal Oak 16202ST if you want the original proportions and can find one; 15510ST if you want the 70-hour movement and a choice of dials.
- Steel, time and date, and it must be a Nautilus. A pre-owned 5711/1A with papers; expect to pay a large premium and check the dial suffix, since the 5711/1A-010 blue, the 5711/1A-011 white and the 5711/1A-014 green differ in price.
- A complication in steel. Nautilus 5712/1A or 5726/1A; AP has no steel equivalent in the Royal Oak line.
- A chronograph. Royal Oak 26240ST or the Nautilus 5990/1A; the 5990 guide covers the Patek in detail.
- Smaller wrist. Royal Oak 15550ST in steel, or the Nautilus 7118 in gold.
- Gold. Royal Oak 15202OR or 16202OR, or the Nautilus 5811/1G; the AP is cheaper and available in more metals.
Buying a Royal Oak or Nautilus: what to check
- Papers. An AP warranty card should match the case number on the caseback; a Patek certificate of origin should match the case and movement numbers. Both brands issue archive extracts for older watches.
- Case bevels. The polished chamfers on both cases and bracelets should be crisp and even; rounded bevels and blurred brushing mean refinishing.
- Bezel screws and ears. Royal Oak screws should sit flush and aligned; the Nautilus ears should show no gap to the case middle.
- Bracelet. Hold the watch by the clasp and look for sag; check the screwed links for marks from tools.
- Dial. Tapisserie and Nautilus grooves should be free of dust and scratches; lume on hands and markers should match.
- Movement and service. Ask for a timing print and for evidence of brand-only servicing.
- Price against the band. A full-set steel 5711 or 16202ST offered well under the going rate is the single most reliable warning sign.
Our authentication process describes what we inspect before dispatch, and our Royal Oak authentication guide goes deeper on cases, dials and papers.
Quick answers
Which is better, the Royal Oak or the Nautilus?
The Royal Oak is the more varied and more obtainable watch, with more sizes and metals and a current steel three-hander; the Nautilus is rarer, softer in shape and holds value better. Neither is objectively better; the Royal Oak is the more practical purchase and the Nautilus the more valuable one.
Is the Nautilus more expensive than the Royal Oak?
Yes. Bizak's sourced catalogue listed a Royal Oak 15510ST at US$53,457 to US$70,555 and a discontinued Nautilus 5711/1A at US$152,440 on September 21, 2026, sourced to order.
Which is thinner, the Royal Oak or the Nautilus?
They are close. The 39 mm Royal Oak 16202ST is about 8.1 mm thick and the 41 mm Nautilus 5811 about 8.2 mm; the 41 mm Royal Oak 15510ST is thicker at about 10.4 mm.
Can you still buy a steel Nautilus?
Not new as a time-and-date watch; the 5711/1A ended in 2021 and the 5811 is white gold. The 5712/1A, 5726/1A and 5990/1A are still made in steel, and the 5711 is available pre-owned.
Which Royal Oak is closest to the Nautilus 5811?
The 16202ST: both are extra-thin time-and-date watches at about 8 mm thick with the original Genta proportions. The 15510ST is the same diameter as the 5811 but thicker and more sporting.
Request a Royal Oak or Nautilus sourcing quote
Tell us the reference, size, metal and dial, preferred condition and year range, whether papers are required, and your budget and timing, through our sourcing enquiry form. We confirm the specific watch, photographs, papers and final price before you commit. Catalogue entries: Royal Oak 15510ST blue dial, Royal Oak 15510ST black dial, Royal Oak 15202OR, Nautilus 5711/1A-010, Nautilus 5712/1A-001, Nautilus 5811/1G-001; browse the Royal Oak collection, the Nautilus collection, or sell or trade your watch.
Related reading: Royal Oak authentication and collecting guide · Nautilus 5990 guide · Nautilus 5726 guide · Audemars Piguet price guide.
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