Patek Philippe Nautilus
Reference 5990/1A-011
Hold — Stable price development
D
Investment Grade D · 10/100
$95,074
As of: 11.07.2026
RRP (list price): $43,434
+119 % above RRP
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ℹ️ 1-month trend
Price change over the past 30 days. Shows the short-term market movement — relevant if you want to buy or sell soon.
ℹ️ 4-month trend
The central metric behind the momentum score. It filters out short-term swings and shows the true, medium-term market trend of this reference.
ℹ️ Volatility
Annualised price fluctuation. Below 10 % = very stable, 10–20 % = normal, above 20 % = volatile. With high volatility the price can change quickly — in both directions. Be cautious about buying without checking the current price.
ℹ️ Momentum score
ChronoCheck's own indicator from 0 to 100, calculated from the 4-month trend, volatility and market direction.
- Above 60 — Upward trend. Good time to sell, prices are rising.
- 40 – 60 — Neutral. Stable price level, no pressure to act.
- Below 40 — Downward trend. Wait or enter at a good price.
ℹ️ Investment Grade A/B/C/D
ChronoCheck's own rating for each reference. A 0–100 point scale, made up of four weighted components:
- Momentum (40 pts) — trend strength from the momentum score.
- Liquidity (25 pts) — number of active live listings.
- Stability (20 pts) — inverse volatility — the calmer, the better.
- Source robustness (15 pts) — number of independent market sources.
- A · 75+ Trend is right, liquidity good, data broad.
- B · 55–74 Solid, but one component weaker.
- C · 35–54 Average, volatility or market breadth weigh on it.
- D · below 35 Downward or too little data — a collector's piece.
Not investment advice. Pure data analysis from aggregated market sources.
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Technical data
Production period
since 2022
Movement / caliber
CH 28-520 C FUS
Functions
28-520 C FUS Hours, Minutes, Additional 12 Hour Hand (adjustable), Day / Night Indication, Small Seconds | Date | Chronograph, Column wheel
Lift angle 52° — important for timing-machine diagnosis:
with this value a watchmaker can correctly measure rate deviation, amplitude and beat error.
ChronoCheck verifies such technical details directly from the manufacturers' factory specifications.
Patek Philippe Ref. 5990/1A-011 — Variants and collector names
Known as: Nautilus TT, Nautilus Travel Time Chrono, Blue TT, NTT Blue, 5990 Blue
Production phases and changes
- 2022: Dial change: black-grey gradient (5990/1A-001) → blue sunburst gradient (5990/1A-011)
## The Blue Turn of 2022
The 5990/1A-011 is not simply a color variant of the Travel Time Chrono. The 2022 transition marks a genuine break: Patek swapped the black-gray sunburst dial of the -001 for today's iconic blue and changed the reference number at the same time. Since then, the watch has circulated in the market under several collector tags — Nautilus TT, NTT Blue, and sometimes just 5990 Blue. It still finds the right buyer every time, because blue Nautilus dials have carried a pull since 2021 that price charts make plainly visible.
## What Else Changed in 2022
The dial swap did not arrive alone. Patek simultaneously revised the clasp: the old design gave way to a seamless butterfly model with an integrated, tool-free extension system — a detail that goes underappreciated until the watch is actually on the wrist. Both updates together justified the step from -001 to -011. Put a 5990/1A-001 next to a -011 and you are looking at more than just blue versus gray.
## Five Names, One Reference
In the collector market, the 5990/1A-011 goes by at least five names: Nautilus TT, Nautilus Travel Time Chrono, Blue TT, NTT Blue, and 5990 Blue. All lead to the same watch; all circulate on platforms like Chrono24 and in watch forums. The spread matters for buyers searching for listings, since offers surface differently depending on which tag a seller uses. The watch itself stays constant throughout: stainless steel, dual time zone, chronograph — and since 2022, the blue that sets it apart from every earlier 5990 variant.
Brand profile: Patek Philippe
Patek Philippe produces the world's most exclusive watches. Counterfeits are typically identifiable by their build quality — the genuine article sets standards that are nearly impossible to replicate.
Key authenticity features
- Dial embossing Nautilus: the genuine piece has 11 RAISED horizontal stripes with precise edges. 3D depth is visible under raking light. Flat stripes = fake.
- Case thickness Nautilus 5711: EXACTLY 8.3mm measured with calipers. Deviation of +0.5mm = fake with 7750 base or Miyota.
- Weight Nautilus 5711/1A: 131.4g ± 1g (with bracelet). >5g deviation = suspect.
- PP Seal on rotor (display back): the genuine Patek Philippe Seal features DEEP 3D engraving with sharp edges. Fake rotors have a shallow stamp.
Serial number format: Patek serial numbers: 6–7-digit number on the caseback. Complete archive held by Patek Philippe — an extract can be ordered.
Buying guide: Patek Philippe Nautilus
What matters at this price point
At $95,074 we are no longer talking about an everyday watch but a collector's piece. Every detail drives the price: an original dial can be worth five figures more than a service dial, missing papers noticeably depress the value, and an over-polished bezel is effectively lost money. Anyone buying in this range should take their time and, when in doubt, take a second look.
Watch out for swings: This reference has an above-average volatility of 117.1 percent. In concrete terms: the price can move by several hundred euros within a few weeks. Check the current value before buying or selling — old listings or auction results from two months ago are of little help.
What to look out for when buying?
- Authenticity: The serial number and reference on the case must match the papers. A professional authenticity check of the Patek Philippe Nautilus reliably rules out counterfeits.
- Condition: Check scratches on the case and bezel — professional refurbishment can leave traces.
- Service history: A documented service by the manufacturer or a certified watchmaker increases the value.
- Scope of delivery: Box, papers and warranty card make a noticeable price difference on the Nautilus.
- Independent certification: The CPS-52 standard covers 52 checkpoints — from the serial number and the timing machine to water resistance. The result is secured on the blockchain and can be verified at any time.
Frequently asked questions about the Patek Philippe Nautilus
What is the current market value of the Patek Philippe Nautilus (Ref. 5990/1A-011)?
The current market value of the Patek Philippe Nautilus Ref. 5990/1A-011 is $95,074 (as of 11.07.2026). We aggregate asking prices from several independent live market sources — authorised dealers, CPO dealers, pre-owned marketplaces and auction results. The actual sale price can vary by 10–15 % up or down depending on condition, completeness and service history.
How has the price of the Patek Philippe Ref. 5990/1A-011 developed over the past 4 months?
The 4-month trend is stable. Over the past month the change was -44.7 %. Volatility is above average at 117.1 % — the price can move noticeably in the short term.
Is now a good time to buy or sell the Patek Philippe Nautilus?
Stable market conditions — no acute pressure to act. This assessment is based on the market trends of the past 4 months and is not investment advice. Before any transaction we recommend checking the current market price up to date — for example with our free market value tool.
What should I look out for when buying a Patek Philippe Nautilus?
The key things to check when buying a Patek Philippe Nautilus are: 1) that the serial number and reference match the papers, 2) the condition of the case and bezel (scratches, signs of polishing), 3) completeness of box and warranty card (a 10–15 % price premium for a full set), 4) a documented service history, 5) an independent authenticity check — advisable from a purchase price of 5,000 EUR.
How do I tell whether a Patek Philippe Nautilus is genuine?
With a Patek Philippe, counterfeits can usually be spotted from several details: the weight and material quality of the case, the precise execution of the bezel and dial, correctly engraved serial numbers at the prescribed depth, and the behaviour of the movement. A forensic authenticity check to the CPS-52 standard examines 52 individual points and is the most reliable method — especially for purchases over 10,000 EUR.
Where can I sell a Patek Philippe Nautilus Ref. 5990/1A-011?
There are several channels for selling a Patek Philippe Nautilus: 1) specialist online dealers (Chrono24, Watchfinder, Wempe, Chronext) — fast, but with a 10–20 % margin deduction, 2) auction houses (Phillips, Christie's, Sotheby's) — higher proceeds possible, takes 3–6 months, 3) private sale (classifieds, WatchUSeek) — highest proceeds, but more effort and fraud risk. In our experience a ChronoCheck valuation report raises the achieved sale price by 5–10 %.
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