Cartier · Must de Cartier 21

Must de Cartier 21, 31 mm, Steel

Ref. 1330c. 2001

The Must de Cartier 21 Ref. 1330 is the 31 mm Must 21 in stainless steel, with a chapter ring bezel, a silvered dial and a signed Cartier quartz movement, on the Cal. 690 or the Cal. 90.06 depending on the example.

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One recent sale of Ref. 1330

  • Sep 2025Bonhams LondonKnightsbridge online, lot 24, 22 Aug to 3 Sep 2025. Steel and gold, 31 mm, Cal. 690, purchased 2009, box and papers. Sold for, including premium.$1,050
For comparison

31 mm, steel or steel and gold, quartz (Ref. 1330 and 9011): two sales, $900 and $1,050, one of them Ref. 1330.

One sale is a rough guide. See it in the calculator.

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Specifications

Reference
1330
31 mm, stainless steel or steel and gold, quartz
Year
c. 2001
Date from the retailer Chrono.dk, whose example was sold new by a Danish authorized dealer in April 2001 with box and papers; no auction or dealer catalog we found dates an example
Movement
Quartz
Signed Cartier quartz; Fellows catalogs the Cal. 690 on two examples, the Cal. 90.06 on two and the Cal. 90 on one, and Bonhams the 8-jewel Cal. 690
Case
31 mm, Stainless Steel
Dial
Silvered
Silvered dial inside a chapter ring bezel; Bonhams describes a sunburst silvered dial
Hands
Not described in the catalogs consulted
Not described in the catalogs consulted
Crystal
Not described in the catalogs consulted
Not described in the auction catalogs consulted
Strap
Steel or steel and gold bracelet
Signed bracelet with a double folding clasp, in stainless steel or steel and gold; Fellows has also sold one on a leather strap with a signed steel deployant clasp

Visual Description

The Ref. 1330 is the 31 mm Must 21: a round stainless steel case with a chapter ring bezel, a silvered dial and a signed bracelet with a double folding clasp. Fellows measures it at 31 mm on all five lots we opened, and Bonhams lists 31 mm too. Most examples are all steel; Bonhams sold one with a sunburst silvered dial on a steel and gold link bracelet. The catalogs we consulted do not describe the hands or the crystal.

Reference Significance

The 1330 is the largest of the two four-digit Must 21 references that auction houses catalog repeatedly, beside the mid-size Ref. 1340. Fellows has sold it at least five times between 2016 and 2019, and Bonhams once, in 2025. Unlike the earliest Must 21 watches, whose nine-digit case numbers begin 9010 or 9011, the 1330 prints its reference separately from a lettered serial.

Historical Context

The Must 21 was introduced in 1989, according to La Souveraine's catalog. No auction or dealer catalog we found dates a Ref. 1330 to 2001 or earlier: the Fellows lots carry no date, and the Bonhams example was purchased in September 2009. The earliest date we have is from the Copenhagen retailer Chrono.dk, which listed a 1330 sold new by a Danish authorized dealer in April 2001, with its box, papers and certificate. No source we opened gives a first or last year for the reference.

What to Look For

Case back: Read the reference 1330 and the serial. The Fellows examples carry serials beginning PL; the Bonhams example, bought in 2009, a case number beginning MX.

Movement: A signed Cartier quartz movement. Fellows records the Cal. 690 on two examples and the Cal. 90.06 on two others, and Bonhams the 8-jewel Cal. 690, so either caliber is consistent with the reference.

Bracelet and clasp: Check the links for play and the double folding clasp for a firm close; ask for spare links, which Fellows and Bonhams have sold with the watch. On steel and gold bracelets, check the gold-colored links for wear at the edges.

Case: Look for dents along the case side and for scratches on the chapter ring bezel.

Papers: A Cartier guarantee or certificate is the best way to date a 1330, since none of the auction examples we found carries a date before 2009.

Known Variants

Documented dial, case, and bracelet variations of Ref. 1330.

All Steel

Stainless steel case, chapter ring bezel, silvered dial and signed stainless steel bracelet with a double folding clasp. Fellows has sold four at 31 mm: serials PL149939 and PL338939 on the Cal. 690, and PL182067 and PL157787 on the Cal. 90.06.

Documented at auction

Steel and Gold

Brushed and polished steel case, case number MX700665, with a sunburst silvered dial on a steel and gold link bracelet with a signed double folding clasp. Bonhams sold one at 31 mm on the 8-jewel Cal. 690, purchased in September 2009, with its box, certificate and guarantee.

Purchased 2009 (dated example)Documented at auction

On Leather Strap

Stainless steel case with chapter ring bezel and silvered dial, serial PL208150, on the Cal. 90, fitted to an unsigned black leather strap with a signed steel deployant clasp. Fellows sold it in 2019; the strap may not be original.

Documented at auction

How to tell it apart

What separates a Ref. 1330 from its neighbors, and what to check before you buy or sell one.

What is a Must de Cartier 21 Ref. 1330 worth?

Archiva has found one public sale of Ref. 1330 in the last three years: $1,050 at Bonhams London in September 2025. One sale is a rough guide, not a market price. For comparison, from November 2023 to November 2026: 31 mm, steel or steel and gold, quartz (Ref. 1330 and 9011): two sales, $900 and $1,050, one of them Ref. 1330.

What is the Must de Cartier 21 Ref. 1330?

The 31 mm Must 21: a round stainless steel case with a chapter ring bezel, a silvered dial, a signed Cartier quartz movement and a signed bracelet with a double folding clasp, in all steel or in steel and gold. Fellows has sold it at least five times and Bonhams once.

How old is my Ref. 1330?

No auction or dealer catalog we found dates an example to 2001 or earlier. The earliest date we have comes from the Copenhagen retailer Chrono.dk, which listed a 1330 sold new by a Danish authorized dealer in April 2001, with its box and papers. Bonhams sold one purchased in September 2009. The Fellows lots carry no date, so Cartier papers are the surest way to date a watch.

Which movement is in the Ref. 1330?

A signed Cartier quartz movement, and the catalogs split between two calibers. Fellows catalogs the Cal. 690 on two examples and the Cal. 90.06 on two others, plus one printed Cal. 90; Bonhams lists the 8-jewel Cal. 690. Either is consistent with the reference, so open the case back or ask for the service record to see which one a watch carries.

How does the Ref. 1330 differ from the Ref. 1340?

By size. The 1330 is the 31 mm Must 21 and the [Ref. 1340](/cartier/must-21/ref-1340) the mid-size, about 28 mm. Fellows describes both with a stainless steel case, a chapter ring bezel and a silvered dial, and records the same calibers in each.

How does the Ref. 1330 differ from the earliest Must 21 watches?

Early Must 21 watches carry a nine-digit case number beginning 9010 or 9011 and catalogs describe them in sizes from 30 to 35 mm. The 1330 prints its four-digit reference with a separate serial that begins with two letters: PL on the Fellows examples and MX on the one Bonhams sold.

What should I check before buying a Ref. 1330?

The case back for the reference 1330 and a serial; a bracelet without stretched links and a double folding clasp that closes firmly; on steel and gold examples, the gold-colored links for wear at the edges; dents along the case side; and a quartz movement that runs. Box, certificate and guarantee, as on the Bonhams example, date the watch.

Other Must de Cartier 21 References

Ref. 1340Photograph wanted
Ref. 1340

Must de Cartier 21, Mid-Size, Steel

Stainless Steel · c. 1998

Back to Must de Cartier 21