Search the serial number against The Watch Register before you pay - it is the largest commercial database of lost and stolen watches, results are instant, and a single search costs £16 with bulk rates from £2.00 per watch, both excluding VAT. Combine that with photographed ID for the seller, a signed purchase record, and a hold on funds until the result is back.

Do it before the money moves, not after. Under section 21 of the Sale of Goods Act 1979 a buyer acquires no better title than the seller had. If the watch was stolen, you never owned it - you hand it back to the true owner and you are out the purchase price, however honestly you bought it.

Why good faith does not protect you

Section 21(1) is short and unforgiving:

Where goods are sold by a person who is not their owner, and who does not sell them under the authority or with the consent of the owner, the buyer acquires no better title to the goods than the seller had, unless the owner of the goods is by his conduct precluded from denying the seller's authority to sell.

This is the nemo dat rule. There are narrow statutory exceptions - mercantile agents, sellers and buyers in possession, sales under court order - but none of them rescues a dealer who bought a stolen Rolex from the person who stole it or from anyone downstream of them. Title never entered the chain.

So the loss is yours. The exposure is the full purchase price, and on watches that is frequently a five-figure number.

The criminal exposure is worse

Two offences sit behind the civil position.

Handling stolen goods, section 22 of the Theft Act 1968: a person handles stolen goods if, otherwise than in the course of the stealing, knowing or believing them to be stolen, they dishonestly receive them or dishonestly undertake or assist in their retention, removal, disposal or realisation. Maximum sentence on indictment: fourteen years.

The threshold is "knowing or believing", not "knowing". Belief can be inferred from the circumstances - a price far below market, a seller who will not give ID, no box or papers and no explanation, a serial that has been polished out. A dealer who did not ask because he did not want the answer is on dangerous ground.

Acquiring criminal property, section 329 of the Proceeds of Crime Act 2002. There is a defence where you acquired the property for adequate consideration - but section 329(3) defines consideration as inadequate where its value is "significantly less than the value of the property". The bargain is the problem. The better the deal looks, the weaker the defence.

Together these mean the commercial instinct that a suspiciously cheap watch is a good buy is exactly backwards.

What to run, and in what order

1. The Watch Register. Their published position: searches are processed instantly, they check over 250,000 watches on the pre-owned market each year, and they locate five lost and stolen watches per day. A clear result comes back as a PDF certificate, which their FAQ describes as demonstrating "a good faith transaction". They offer API integration to larger businesses, and take searches by website, WhatsApp or SMS.

If a serial matches, they will contact you and ask you to hold the watch securely where it is safe to do so, and to provide your seller's contact details. Know in advance that this is what a positive result looks like, and decide now how you will handle it, because the moment to work it out is not with the seller standing at the counter.

2. The manufacturer, where the piece warrants it. Brands will confirm whether a serial and reference are consistent, and a service history can confirm ownership at a point in time. This is slower and not universally available, but for a high-value or unusual piece it is worth the call.

3. Police channels. The National Mobile Property Register is used by UK police forces for property checks and is device-weighted, but is worth knowing about. If you have a genuine suspicion, the right step is a call to police, not a private test.

4. The obvious physical checks. Serial and reference present, matching, and not re-stamped or polished away. Case back and lug numbers consistent. Papers matching the serial, not just the reference. A removed or altered serial is a finding in itself and should end the transaction.

What no database can tell you

The Watch Register only knows what has been reported to it. A theft two days ago from a private owner who has not yet contacted their insurer will not be on it. Neither will a piece taken in a burglary abroad and never registered. A clear certificate is evidence that you checked the most comprehensive database available - it is not proof of good title, and nobody serious claims it is.

That is why the check is one of four controls, not the whole of your process.

The other three controls

Photographed ID, taken at the counter. Not "seen", photographed and attached to the record. Under the Money Laundering Regulations you will need customer due diligence records anyway if cash is involved; see high value dealer registration.

A signed purchase record stating that the seller is the owner and has the right to sell. It does not give you title if they are lying - nothing does - but it converts a civil misunderstanding into a documented misrepresentation, and it materially strengthens your position with police and insurers.

Delayed settlement. Bank transfer on a stated delay rather than cash across the counter. It gives you a window if something surfaces, it creates a traceable payment, and sellers with something to hide object to it. That objection is itself information.

What it costs to run this properly

Control Cost
Watch Register single search £16 ex VAT
Watch Register bulk rate from £2.00 ex VAT per watch
ID photograph and signed purchase record Staff time
Delayed settlement Nil

Against a single £14,000 loss that you never recover, and which you cannot claim on stock insurance because you never owned the item. At £2 to £16 a check, the argument does not need making.

Set it up as a rule, not a judgement call

The failure mode is not that dealers do not know about these checks. It is that the check gets skipped on the day it matters - a busy Saturday, a plausible seller, a piece you want. Make it unconditional: no serial check, no payment, no exceptions, including for people you know. Anyone who cannot wait for an instant search result has told you something.

Keep the certificates. Three years later, when a claim surfaces on a watch you sold on, the certificate is the difference between a difficult conversation and a very expensive one.

Sources

This is general information, not legal advice. Title and handling questions are fact-specific and the consequences are criminal as well as civil. If you have any reason to think a piece in your possession may be stolen, take legal advice immediately and do not sell it on.

WatchCRM will not let an item reach saleable status until a serial check is recorded against it, and it keeps the certificate with the stock record for the life of the piece. Bulk checks run from the intake screen rather than a separate browser tab.