Before you check a serial.

Replica serials are not always random. Counterfeit factories reuse exact serial numbers, ranges, structures and generation rules across watches and production batches.

SerialRisk records those repetitions and learns the patterns behind them. That means a serial can reveal a connection to known replicas even when the watch itself looks convincing.

SerialRisk has recorded more than 100,000 replica watches carrying more than 40,000 distinct serial numbers.

We currently monitor 10 replica sources, collect data across 15+ watch brands and add hundreds of newly observed serials each week.

A SerialRisk check is therefore not a lookup against a small blacklist. It is screened against a growing body of known counterfeit serial data and the recurring patterns found within it.

From the replica market itself: listings where watches are openly offered as replicas.

This means we can record counterfeit serials while the watches are still circulating in the replica market — before some of them may later be presented to a dealer or buyer as genuine.

We continuously monitor replica sources, so newly listed production batches and newly observed serials are added as the market changes.

Yes. An exact serial does not need to already exist in our database for SerialRisk to find a risk signal.

Replica factories reuse structures, character positions and generation rules across production batches. SerialRisk learns those recurring patterns from known counterfeit serials.

If a previously unseen serial follows one of those structures, it can return a Pattern signal. We show what matched and why.

Traditional counterfeit databases usually start after a watch or serial has already been identified and reported as fake.

SerialRisk starts earlier. We collect serials directly from the replica market, where watches are openly sold as replicas. That means a serial may already be in our counterfeit records before the same watch, or another watch carrying that serial, reaches a dealer or buyer as supposedly genuine.

And we do not only look for exact reported serials. SerialRisk also learns recurring serial structures and generation patterns across known replica watches.

SerialRisk screens the serial number against:

• Known counterfeit records, for exact matches
• Recurring serial patterns learned from replica data
• Near and look-alike matches, where relevant

It checks the serial number — not the movement, dial, case, papers or physical condition of the watch.

A check returns one of three primary results:

• Direct match — the exact serial exists in our counterfeit records.
• Pattern signal — the serial matches a recurring structure learned from known counterfeits.
• No signal — neither check found anything.

Where relevant, SerialRisk can also show near matches, look-alike character matches and unusual serial formats.

No. No signal means SerialRisk found no known counterfeit record or learned pattern for that serial.

It does not prove that the watch is genuine — it means the serial itself showed no known risk signal in our data.

Yes. A Pattern signal is a statistical risk signal, not proof that a watch is counterfeit.

Serial patterns are based on recurring structures found across known counterfeit watches. Because genuine serials can sometimes share individual characters or structures by chance, statistical overlap is possible.

The fewer characters or constraints a pattern contains, the greater the possibility of a coincidental match. SerialRisk therefore evaluates the pattern in context rather than treating every structural match equally.

That is why SerialRisk does not treat a Pattern signal as a verdict. We show what matched and how strong the signal is, so it can be considered together with the watch, its papers and its seller.

The serial number and the watch brand.

On modern Rolex watches, the serial is engraved on the rehaut at six o'clock. On older references it may sit between the lugs and is also commonly shown on the warranty card.

We ask for the brand because serial formats and patterns differ by manufacturer.

SerialRisk currently specialises in modern Rolex serials.

We already collect counterfeit data across 15+ watch brands, including Cartier, Audemars Piguet, Tudor, Omega, IWC, Patek Philippe, TAG Heuer, Vacheron Constantin, Breitling and more. Cartier is currently in internal testing, with additional brands added as their data and detection rules meet our quality standards.

Yes. Your result remains available and can be downloaded as a PDF containing the serial, findings and check ID.

This gives you a record you can keep or use when discussing the watch with a seller.

Your serial is stored with your result so the check can be accessed and reconstructed later.

It is never added to SerialRisk's counterfeit dataset.

We do not publish or sell customer serials. See our privacy notice for details.

No. We do not notify the seller, marketplace or watch brand that you ran a check.

€1.99 for a single serial check. No account or subscription is required.

Checking watches regularly? Our Starter and Pro plans offer lower per-check pricing for higher volumes.

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If payment succeeds but the check fails to run, we refund it in full.

Because a completed check is digital content delivered immediately, the statutory withdrawal right may expire once you expressly request immediate delivery and acknowledge this at checkout. See the withdrawal policy for details.