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
374+
Brands Covered
100K+
Happy Clients
2–24h
Turnaround
23 guides — updated regularly by our experts
The serial is the movement number: inside on vintage Omegas, on the case from the early 1990s. Where to find it, what year range it gives, and why a number that fits proves nothing.
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Genuine older Gucci watches carry their proof on the caseback, inside the caseback and on the movement board. This guide shows what each model family really looks like, and which common red flags are unreliable.
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Tissot makes quartz and automatic watches across dozens of lines, so there is no single caseback or dial to memorise. Here is what genuine casebacks, dials, clasps and sport-line engravings look like, organised by model family, and what a matching mark does and does not prove.
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Rado's counterfeit market targets one thing almost exclusively: the modern high-tech ceramic Jubilé line, not the brand's vintage mechanical watches. A caseback that runs two words together where a genuine one keeps them apart is the clearest tell we found.
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Chanel's watch counterfeits cluster around two real product lines, the ceramic J12 and the octagonal Première, plus a long tail of fashion pieces wearing Chanel branding on case shapes Chanel never made. Catching the wrong case shape ends most inspections before you ever reach the caseback.
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Louis Vuitton's watch business spans the round-cased Tambour, rectangular and square-cased watches, monogram-flower quartz dials, and monogram-canvas cuff watches, too many distinct lines for any one to support its own guide. A mangled script logo, one capital letter cast wrong, catches most fakes before you even reach the caseback.
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Piaget fakes rarely bother matching the caseback to the dial. We found a watch stamped "Ermex, base metal" under a "Piaget" face, and another claiming 19 Swiss jewels over a Japanese no-jewel quartz module.
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Tudor fakes rarely try to clone the current catalogue. They pick a short list of recognisable model names, most often the Pelagos, the Grantour Chrono, and the Prince Date, and copy the dial closely while getting the caseback wrong. Here's what to check, model by model.
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A Vacheron Constantin fake can hide a quartz movement behind a "Chronometer" caseback, or a mirror-reversed ring of engraving. Both are verifiable.
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A brand-wide walkthrough for any Omega — Seamaster, Speedmaster, Constellation, De Ville — from the co-axial sweep and crystal logo etch to the movement serial and caseback.
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A brand-wide walkthrough for any Hublot — Big Bang, Classic Fusion, Spirit of Big Bang — from the H-screw bezel and HUB movement to the ceramic weight and caseback numbers.
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A brand-wide walkthrough for any Patek Philippe — Nautilus, Aquanaut, Calatrava — from movement finishing and the Patek Seal to the applied logo, the numbers, and the Archive Extract.
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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 year; post-2010 serials are randomised and can't be dated. Where to find yours, the full prefix table, and the engraving quality that matters more.
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The Omega x Swatch MoonSwatch sold out instantly and resale demand made it one of the most counterfeited Bioceramic watches going. How to tell a real one 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 Submariner. The helium escape valve, wave-pattern dial, and movement rotor — every check experts run.
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The Patek Nautilus 5711 trades above $150,000 secondhand. The porthole case proportions, embossed dial, integrated bracelet, and movement finishing that separate real from super-clone.
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The AP Royal Oak is holy-trinity grade and one of the most faked. The eight-screw bezel-slot orientation, Grande Tapisserie dial, and movement finishing — every authentication check.
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Learn the essential techniques experts use to authenticate Rolex watches, from movement inspection to serial number verification.
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