Sell my Cartier Must 21

Get your Cartier Must 21 valued and enjoy same-day payment

For a seamless and efficient experience, exchange your Cartier Must 21 with The Watch Exchange London. Our same-day payment service is designed to simplify the process, ensuring a hassle-free transaction for your valuable timepiece.

How to sell your Cartier Must 21

1. Complete our form

Complete our form to start the process. We aim to reply within 48 hours.

2. Visit our shop

Bring your watch, with proof of purchase, to our store in Mayfair.

3. Watch inspection

We will inspect your watch and offer a guaranteed fair price.

4. Get paid!

Accept our offer or choose to part-exchange. Get paid within an hour!

Why Sell Your Cartier Must 21 To The Watch Exchange?

Selling your Cartier Must 21 through The Watch Exchange London means partnering with professionals who appreciate the bold, sporty character and design heritage behind this distinctive model. With over 15 years of experience in the luxury watch industry, we provide precise valuations based on current market performance and collector interest.

Originally launched in 1990, the Cartier 21 – also known as the Must 21 or Chronoscaph 21 – was Cartier’s foray into sports watch territory. Its distinctive tonneau-shaped case, colourful rubber straps, and striking dial design gave it a contemporary edge that set it apart from the rest of the Cartier catalogue. Whether yours is a stainless steel quartz model or a more unusual variation, our process is designed to be quick, secure, and transparent.

Receive a no-obligation quote within 60 minutes either in person at our central London location or remotely. We offer same-day payments and a smooth selling experience you can trust.

Learn More About the Cartier Must 21

Do Cartier Must 21 watches hold their value?

The Cartier Must 21 occupies an interesting position on the secondary market. While it is not among Cartier’s most iconic references, its retro-sports appeal and bold 1990s aesthetic have attracted growing collector interest in recent years. Examples in excellent condition with original straps and accessories tend to hold their value well, and rarer variations – such as two-tone or gold-cased models – command a premium.

Which Cartier Must 21 models are most desirable to buyers?

The most sought-after examples are those in the best cosmetic condition, particularly watches retaining their original coloured rubber straps and featuring an unscratched case. Gold or two-tone yellow gold and steel variants are especially desirable. The Chronoscaph version, with its distinctive chronograph function and sporty design, also attracts strong interest from buyers looking for something characterful and unusual within the Cartier range.

How does condition affect the resale value of a Cartier Must 21?

Condition plays a significant role. The Cartier Must 21’s polished case and rubber strap system are susceptible to wear, and deteriorated straps or heavily scratched cases will reduce value. Watches in near-mint condition with original or well-preserved straps, accompanied by box and papers, will always achieve the strongest prices. A full set – including spare straps or original accessories – is a notable advantage.

Is there strong demand for the Cartier Must 21?

Demand for the Cartier Must 21 has been steadily growing as collectors develop a greater appreciation for well-designed sports watches from the late 1980s and 1990s. Its bold design and relatively affordable entry point compared to other Cartier models make it attractive to a wide range of buyers, from seasoned Cartier collectors to those seeking a distinctive vintage-inspired sports watch.

What’s the best way to sell my Cartier Must 21 securely?

Selling through The Watch Exchange London ensures your watch is handled professionally and securely. Avoid the risks of private listings or auction platforms – our experienced team offers fast appraisals, same-day payment, and full discretion throughout the process.

How can I authenticate my Cartier Must 21 before selling?

Authenticating a Cartier Must 21 involves examining the case number, movement, dial printing, crown detail, and the condition and originality of the strap and buckle. Our in-house specialists provide free authentication and valuation, helping you sell with confidence and complete peace of mind.

Sell your Cartier Must 21 In Four Simple Steps

Sell your watch hassle-free. Fill out our form to sell and get a quick valuation. We offer same-day payments for sellers ensuring a smooth, transparent transaction with no surprises.

We’ve bought over 10,000 luxury watches from happy sellers

Get to know The Watch Exchange London

For over 15 years, we have valued and bought some of the biggest names in the watch industry, including Rolex. Our highly skilled team of watch buyers will thoroughly inspect your Rolex watch before making a fair offer. We tend to buy luxury timepieces worth between £500 and £500,000. 

If you accept our offer, we’ll complete the hassle-free payment process in under 60 minutes. We aim to make your watch selling journey as smooth as possible, taking a delicate process and turning it into a favourable one.

  • Family business in Mayfair’s exclusive Burlington Arcade.
  • Experts in valuing Rolex, Cartier, and other leading brands.
  • Bought over 10,000 watches and counting!
  • 15 years of experience in making fair offers and valuations.
  • Trusted by high-profile clients.
  • 100% secure and quick payments.

Quick & simple

We keep our exchange process quick and easy, so you can get an offer as soon as possible.

Expert watch buyers

With over 15 years of experience, we’ve bought over 10,000 watches and counting!

Experienced valuations

Our team is highly qualified and experienced. The price we offer you is fair and based on a full inspection.

Same-day payment

Accept our offer or part-exchange. We’ll send payment to your bank in less than 60 minutes.

Value your watch at our shop in Burlington Arcade, London

Our watch shop is located at 23 Burlington Arcade, Mayfair, London, W1J 0PR. We’re open Monday through Friday from 9 a.m. to 5 p.m. and take hourly appointments from 10 a.m. to 5 p.m. on these days.

Sell my Cartier Must 21