Why check a serial here.

The serial number and the brand. On a modern Rolex the serial is engraved on the rehaut — the inner ring under the crystal — at six o'clock; on older references it sits on the case between the lugs. If the watch came with its papers, the same number is printed on the warranty card.

The brand is asked for rather than guessed from the serial. A pattern model scored against the wrong brand produces an attribution we would not stand behind on a result somebody paid for.

Specialised in modern Rolex serials · Cartier and 10+ brands coming soon. That is the checkable list, and it is shorter than the list of brands we collect — the next question is about the difference.

The data is already there. We collect counterfeit listings across Rolex, Cartier, Audemars Piguet, Tudor, Omega, IWC, Patek Philippe, Tag Heuer, Vacheron Constantin, Breitling and more — 15+ brands in total — because replica sellers do not specialise, and a factory's habits show up across everything it makes.

Collecting is the fast half. Turning a brand's serials into rules means mining the recurring structures out of them and then measuring how often those structures also occur in genuine serials. For several brands that mining is done and the rules are sitting in review; what holds them back is that measured false-positive rate.

A brand goes live when its rules are accurate enough that we are willing to put the result in front of someone who owns a real watch. Cartier is closest. Everything else follows the same bar, in roughly the order the data allows.

€1.99 for a single serial, paid before the check runs. No account, no subscription, no stored card.

Screening more than a handful of watches is a different job with its own pricing — see the dealer plans.

Expected, and handled. Serials are read off metal by eye, so the check treats look-alike characters (O and 0, I and 1 and L) as interchangeable and reports separately when your serial differs from a known counterfeit by a single character. A transcription slip surfaces as its own finding rather than as silence.

A direct match, meaning your exact serial has appeared in a listing we classified as counterfeit; a pattern signal, meaning the serial has never been seen but its structure matches one recurring across known counterfeits; or no signal. Near matches, look-alike character matches and unusual serial formats are reported separately.

No signal is a result, not a failed check. It says this serial is not in our counterfeit records and does not match a pattern we have learned, which is the outcome a genuine watch is expected to produce, and the outcome most checks return.

It is not a statement that the watch is genuine. It is one check that came back quiet, and the page says exactly which checks those were.

A pattern match is a statistical signal, not proof of a counterfeit. Genuine watches occasionally match one of these patterns by chance — this result on its own should not be treated as a finding against your watch.

This is why the result reports what matched rather than a score on its own. A pattern signal is a reason to look further — at the papers, at the seller, at a watchmaker — not a verdict.

Yes. The result page stays available and the same check downloads as a PDF report, with the serial, the findings and the check ID on it, which is what makes it usable in a conversation with a seller.

From the replica market itself: listings on the sites where these watches are sold openly as replicas, collected continuously across 10 monitored sources and re-read on a twelve-hour cycle. Nothing in the corpus comes from a customer's check.

We collect every brand those sellers offer, not only the ones we can currently check — Rolex, Cartier, Audemars Piguet, Tudor, Omega, IWC, Patek Philippe, Tag Heuer, Vacheron Constantin, Breitling and more. A replica factory does not build one brand, so its habits are easier to see across all of them than inside any one.

It is stored with the result, so the check can be reissued and reconstructed later. It is never added to our counterfeit dataset, never published and never sold. The privacy notice has the detail.

No. A check is a lookup against our own records. We do not contact sellers, marketplaces or brands, and nothing about your check leaves this service.

A check is digital content delivered immediately, so the right of withdrawal can lapse — but only if you agree to immediate delivery and acknowledge that at checkout. The withdrawal policy is here. And if payment succeeds but the check does not run, that is our failure: write to us with the reference on the page and it is refunded in full.