How to Sell a Watch Online in the UK

To sell a watch online in the UK, identify it by its exact reference number, describe its condition and service history honestly, show why you believe it is genuine, price it from recent sales of the same reference, and post it with cover that matches its value. Royal Mail's Signed For services do not pay compensation on valuables such as jewellery, so a valuable watch needs Special Delivery or a courier with suitable cover. If the watch is your own, Capital Gains Tax is unlikely to apply, because HMRC treats watches as wasting assets.

Identify the watch exactly

Two watches from the same brand can look alike and differ a great deal in price. Buyers search by reference number, so start there. You will usually find it on the case back, between the lugs or on the papers. Then add:

• the brand and model name
• the reference number, copied exactly
• the movement: quartz, automatic or hand-wound
• the case diameter in millimetres, measured across the case without the crown
• the case and bracelet material, such as stainless steel, titanium or gold
• the year of purchase or production, if the papers show it
• what comes with it: box, papers, receipt, spare links, a second strap

A title such as "[Brand] [Model], ref. [number], 40 mm stainless steel, automatic, 2019, box and papers, serviced 2024" tells a collector at once whether to read on. "Men's luxury watch, excellent condition" does not.

If the case is gold or another precious metal, describe it only as the hallmark or the maker's markings show it. Our jewellery guide covers what you can call gold or silver.

Condition and service history

Watch buyers ask about the same few things, so answer them before they ask.

Case and bracelet: scratches, dents, and whether the case has been polished. Some collectors prefer an unpolished case with honest wear to one that has been polished and has lost its sharp edges, so say which yours is.

Glass: chips or scratches on the crystal.

Dial and hands: marks, fading, and the state of the luminous paint.

Bracelet stretch: how much the links move against each other, and how many links are left.

Timekeeping: for a mechanical watch, measure how many seconds it gains or loses a day over several days, and say how you measured it.

Service: when the watch was last serviced, by whom, and whether you have the invoice. For a quartz watch, say when the battery was last changed.

Water resistance: say what the dial or case back states, but do not promise that an older watch is still water resistant unless it has been pressure-tested since its last service.

If you sell as a trader, the watch must match your description and be of satisfactory quality, judged by what a reasonable person would expect given the description, the price and other circumstances. Faults you point out before the sale are not covered by that quality term (Consumer Rights Act 2015, sections 9 and 11). A description that is true word for word but leaves a misleading impression can still be a misleading action (Digital Markets, Competition and Consumers Act 2024, section 226).

Genuine, and how to show it

Buyers will want to know the watch is genuine before they pay. Selling goods that bear "a sign identical to, or likely to be mistaken for, a registered trade mark" without the owner's consent is a criminal offence, with a maximum of ten years in prison on indictment (Trade Marks Act 1994, section 92). That includes watches described as replicas or "homages" if they carry the brand's name or logo.

To show a watch is genuine:

• check that the serial number on the case matches the papers
• keep the original receipt, service invoices and any certificate from the brand
• photograph the movement only if you can open the case without damage, or have a watchmaker do it
• if you have any doubt, have the watch checked by the brand or an independent watchmaker before you list it

Papers can be faked as well as watches, so a matching serial number on its own does not prove much. If you cannot confirm a watch is genuine, do not describe it as genuine. Say what you know and what you do not, or do not sell it.

You can cover part of the serial number in public photos and show it in full to a serious buyer.

Pricing from sold examples

Search for the exact reference number and look at what has sold, not what is listed. Compare like with like:

• the same reference and dial colour
• the same set: compare watches sold with box and papers against others sold with them, and watches sold alone against others sold alone
• a similar condition and service history

If your watch needs a service, either price it for that or have it serviced first and include the invoice. Work out whether the service cost is likely to come back in the price before you book it.

Photographs

Use daylight and a plain background, and take:

• the dial straight on, with the hands away from the logo and markers
• the case from each side, and the case back
• close-ups of the clasp, the bracelet and any marks
• the glass at an angle, to show scratches
• the box and papers, with your personal details covered
• a short video of the second hand moving, for a mechanical watch

Packing and posting

Wrap the bracelet so the clasp cannot scratch the case, put the watch in its box or a soft pouch, and pack that in a small rigid box with padding so nothing moves.

Choose the service by value. Every Royal Mail Signed For 1st Class item is covered against loss or damage up to £20, and compensation for valuables such as money and jewellery is not available on that service; Royal Mail recommends senders of valuable items use Special Delivery Guaranteed (Royal Mail: Signed For 1st Class). Special Delivery Guaranteed by 1pm includes compensation cover up to £750, with additional cover available up to £2,500 (Royal Mail: Special Delivery Guaranteed by 1pm). For a watch worth more than that, use a courier with insurance for the full value.

Most watch batteries are small button cells fitted inside the watch. Royal Mail accepts lithium metal cells contained in a device, with restrictions: the battery must not be damaged or recalled, the lithium content must not exceed 1 g per cell, and the device must be packed in strong rigid packaging, secured so it cannot move (Royal Mail: prohibited and restricted items, batteries).

If you sell as a trader, you are liable for loss or damage in transit even when the courier is at fault (Business Companion: selling goods via online platforms).

Private seller or trader, and tax

Selling a watch you have worn for years is different from buying watches to sell at a profit. HMRC says you are probably trading if you sell goods you bought intending to sell for a profit, and trading income above the £1,000 trading allowance in a tax year must be reported (HMRC: income from online platforms). A trader's buyers also have the right to cancel within 14 days of receiving the watch (Business Companion: selling goods via online platforms).

Capital Gains Tax is a separate question. HMRC's guidance treats clocks and watches, even antique ones, as machinery, which gives them a predictable life of 50 years or less and makes them wasting assets (HMRC Capital Gains Manual, CG76904). A wasting asset that is a chattel is exempt from Capital Gains Tax unless capital allowances were, or could have been, claimed on it, for example because it was used in a business (HMRC Capital Gains Manual, CG76721).

Another way to be found

A reference number, honest condition notes and clear photos answer most of a buyer's questions before they message you. You can also list your watches on MC999, a UK marketplace where shoppers discover products and the independent shops behind them. If you already run a Shopify, Shopline or BigCommerce shop you can connect it; if not, you can add products manually. The How to Sell guide explains both routes.

Already selling through your own shop? See how to add your products to MC999 and give shoppers another way to find your business.

Frequently Asked Questions

Can I sell a watch without its box and papers?

Yes. Say clearly that they are not included, and price the watch against sold examples that also came without them. Do not imply that papers exist if you do not have them, and keep any receipt or service invoice you do have, because it helps a buyer trust the watch.

Should I have a watch serviced before I sell it?

Only if the price difference is likely to cover the cost. Compare recent sales of the same reference with and without a recent service. If you do not service it, say when it was last serviced and how it keeps time now, so the buyer can price the service in.

Do I pay tax when I sell a watch I inherited?

Capital Gains Tax is unlikely, because HMRC treats watches as wasting assets that are exempt unless capital allowances could have been claimed. Income Tax only comes into play if you are trading, for example by buying watches to sell at a profit.

Sell on MC999

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