Our watch experts have authenticated thousands of timepieces across every major luxury brand. From the iconic Rolex Submariner and Datejust to the Patek Philippe Nautilus and Audemars Piguet Royal Oak, the counterfeit market is sophisticated and growing. These guides break down exactly what separates a genuine movement from a replica — covering case finishing, dial printing, movement behavior, serial engravings, and more. Whether you are buying pre-owned on Chrono24, WatchBox, or from a private seller, our authentication resources give you the knowledge to shop with confidence.
99.3%
Accuracy Rate
283+
Brands Covered
100K+
Happy Clients
2–24h
Turnaround
11 guides — updated regularly by our experts
The Carrera is the most-copied TAG Heuer, and modern fakes get the dial close. The chronograph reset, the caseback engraving, the movement, and the weight are where they still break.
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The Navitimer's slide-rule bezel gives fakes a hundred tiny numbers to get wrong. The bezel print, the chronograph reset, the caseback serial, and the movement are the decisive checks.
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The Portugieser's clean dial leaves fakes nowhere to hide a bad font. The seconds-marker ticks, the dial printing, the caseback serial, and the movement are the decisive checks.
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Pre-2010 Rolex serials decode to a production year; post-2010 serials are randomised and cannot be dated at all. This guide covers where to find yours, the full prefix table, and the engraving quality that matters more than the digits.
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The Omega x Swatch MoonSwatch sold out almost instantly at launch, and resale demand has made it one of the most counterfeited Bioceramic watches on the market. Here's how to tell a real MoonSwatch from a replica.
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Spot a fake AP x Swatch Royal Pop in minutes: the Bioceramic case, bezel screws, dial print, movement, and packaging tells that replicas still get wrong.
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Richard Mille is among the most expensive watches ever made — and among the most faked. Case construction, movement finishing, and crown tube are where fakes fail.
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The Omega Seamaster is one of the most counterfeited Swiss watches after the Rolex Submariner. From the helium escape valve to the wave-pattern dial and movement rotor, this guide covers every check experts run to authenticate a Seamaster.
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The Patek Philippe Nautilus 5711 trades above $150,000 on the secondary market. This guide covers the porthole case proportions, embossed dial, integrated bracelet, Geneva Seal movement, and hallmarks that separate genuine Nautilus watches from super-clones.
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The AP Royal Oak is one of the holy trinity of luxury sports watches — and one of the most faked. From the eight-screw bezel slot orientation to the Grande Tapisserie dial and Geneva Seal movement, this guide covers every authentication check for the Royal Oak.
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Learn the essential techniques experts use to authenticate Rolex watches, from movement inspection to serial number verification.
Read GuideSkip the guesswork. Our certified experts provide fast, reliable authentication with a written verdict — typically in 2–24 hours. Trusted by 100,000+ collectors worldwide.