Selling a Broken Luxury Watch: Repair It First or Sell As It Is?

A broken luxury watch can be sold even if it has stopped, keeps wrong time, has fogged up or has a cracked crystal. Dealers factor the expected repair into their bid, so a full repair before selling rarely pays off. Small, clearly defined jobs such as a battery change or demagnetisation make sense; otherwise, get a repair estimate first.

Can you sell a watch that no longer works?

Yes. To a dealer, a technical fault is a matter of condition, just like scratches or missing papers. The dealer factors an upcoming service or repair into the bid. A fault does not rule out a sale; it is reflected in the offer.

How much it weighs depends on the cause. An automatic watch that has simply been sitting in a drawer is a different matter from a movement with rust. The cause is often unclear with inherited watches and pieces from an estate, whose history nobody knows in detail.

First check whether the watch is actually faulty. An automatic watch stops as soon as its power reserve runs out, which for many models happens after just a few days off the wrist. Wind it by the crown and watch it for a few hours. If the crown screws down, unscrew it first and screw it back down afterwards.

Is it worth repairing a watch before you sell it?

Usually not in full. A manufacturer service costs from several hundred to over a thousand francs, depending on brand and calibre, and takes weeks to months. After damage, replacement parts come on top and can exceed the base price of the service.

A repair you pay for as a private customer is rarely reimbursed one for one in the offer. On top of that comes the waiting time, during which you cannot sell.

The exceptions are small, clearly defined jobs:

• A battery change on a quartz watch, ideally at the brand's service centre or with a watchmaker who tests the water resistance afterwards.
• Demagnetising a mechanical watch that has suddenly started running noticeably fast.

If the watch does not run at all, a repair can make sense, but only with a repair estimate. At the manufacturer, the watch is inspected first and work only begins once you approve it. You can show the estimate to a buyer even if you decide against the repair. Why even a routine service before selling rarely pays off is explained in the guide Service before selling.

Which faults are common, and what should you do before selling?

Why does a mechanical watch suddenly run fast?

If a mechanical watch suddenly runs noticeably fast, magnetisation is a common and usually harmless cause. Magnetic fields from phones, laptops, bag clasps or induction hobs can affect the balance spring: its coils stick together, the balance oscillates faster and the watch gains time. A watchmaker can demagnetise it in a few minutes without opening the case.

For comparison, a COSC-certified chronometer movement may deviate between minus 4 and plus 6 seconds per day. Deviations of minutes per day point to magnetisation or a technical fault.

Newer movements with an antimagnetic hairspring, such as Rolex (Parachrom) or Omega Master Chronometer, are far less susceptible. If one of these watches keeps badly wrong time, another cause is more likely. With quartz watches, inaccurate timekeeping usually points to the battery or the electronics, not to magnetism.

What should you do about moisture or a cracked crystal?

Moisture inside the case is a job for a watchmaker, not a hairdryer: heat can damage gaskets and oils, and rice or silica gel do not fix the cause. The longer water stays in the movement, the worse the rust damage becomes. Cartier advises taking a watch with condensation under the crystal to a service centre without delay, because moisture can damage the movement.

This is about limiting the damage: have the watch checked straight away, or sell it promptly and state the damage openly. Months in a drawer are the worst option.

With a cracked crystal, stop wearing the watch and, if possible, pull out the crown so the hands stop and do not drag splinters across the dial. Water resistance is not permanent. It depends on gaskets that age, and it can no longer be relied on once the crystal or crown has been damaged.

Which interventions do more harm than good?

• Repairs with non-original parts. Third-party parts from an unauthorised repair can lower the value and may mean the brand's service centre only accepts the watch once they have been replaced with original parts.
• Polishing. Polishing removes metal and softens the edges. It cannot be undone.
• Opening the case yourself. Opening the caseback without the right tools and experience risks scratches, dust in the movement and damaged gaskets.
• Servicing vintage watches. Manufacturers often replace the dial, hands or luminous material on older watches. For collectors, the original condition is then lost.
• A demagnetiser for home use. Used incorrectly, it leaves the magnetisation in place. A watchmaker demagnetises a watch in just a few minutes.

How to prepare a broken watch for sale

1. Describe the fault precisely: what does not work, since when, how large the deviation is and whether the watch has been dropped or come into contact with water.
2. Stop wearing it if there is moisture in the case or the crystal is damaged.
3. Keep every part: bracelet links, screws, a broken crown, the bezel insert, the original strap.
4. Take good photos: dial, a close-up of the damage, caseback, bracelet. The guide Photographing your watch for a valuation shows how.
5. Gather documents: service papers, earlier invoices and any repair estimate. An estimate from the manufacturer shows the dealer what the repair is likely to cost there and makes the calculation easier.

Why does an honest description protect you?

Under Article 199 of the Swiss Code of Obligations (official text in German), an agreement that excludes or limits the seller's warranty is void if the seller has fraudulently concealed defects from the buyer. Even when you sell a watch "as seen", you cannot rely on an exclusion of warranty if you keep a known fault to yourself.

There is also a practical reason. An offer is made on the condition that the watch matches its description. A fault that only comes to light at the handover leads to an adjusted offer; a fault described openly is priced in from the start.

How do you sell a broken watch through Uhrenkontor?

You can also sell watches that are faulty or need a service through Uhrenkontor. State the fault in the form and upload photos. Over 25 partner dealers in Switzerland value the watch, and you receive the highest bid as a binding offer within 12 hours on working days, free of charge for you and without obligation.

Dealers only ever see the watch data and photos, never your contact details. At the personal handover in Switzerland, the watch is checked in front of you and paid for in cash, by bank transfer or by Twint. Uhrenkontor does not repair watches itself. Watches with a market value below roughly CHF 3,000 are not purchased, and serious damage can push a watch below that threshold. The full process is explained under How it works.

Frequently asked questions

Does Uhrenkontor also buy watches that no longer run?

In principle, yes. Faulty watches or watches needing a service go through the same process as working ones, and the fault is reflected in the bid. State exactly what does not work in the form. No bid is guaranteed, and watches below roughly CHF 3,000 market value are not purchased, even if damage takes them below it.

Is a repair estimate free of charge?

Not always. Some brand service centres and watchmakers charge a fee if you decline the estimate and ask for the watch back unrepaired, so ask beforehand. An estimate can still be worthwhile, because it shows the dealer what the repair is likely to cost and so removes uncertainty from the bid.

Is it worth changing the battery before selling?

For a quartz watch, usually yes, because it is a small job and a running watch is easier to assess. Have the battery changed at the brand's service centre or by a watchmaker who tests the water resistance afterwards. A flat battery should not stay in the watch for months, because it can leak and damage the movement.

My watch gains several minutes a day. Is it broken?

Not necessarily. With a mechanical watch, magnetisation is a common and usually harmless cause. A watchmaker can demagnetise the watch in a few minutes without opening it. If it still keeps noticeably wrong time afterwards, a technical fault is more likely, and you should declare it when you sell.

Can I sell a watch "as seen" and keep a fault to myself?

Selling "as seen" is permitted; concealing a fault is not. Under Article 199 of the Swiss Code of Obligations, an exclusion of warranty is void if the seller has fraudulently concealed a defect. An openly described fault protects you. The condition is also checked at the handover, where a concealed fault leads to an adjusted offer.

What should I do about missing bracelet links?

State in the form how many links you have and whether any are missing. Hand over every link, pin and screw you still have together with the watch. Do not buy replacement links or bracelets from third-party makers, because non-original parts can lower the value. The dealer takes an incomplete bracelet into account in the bid.