---
title: "Cartier Must 21 28mm Stainless Steel W10109T2 2009"
type: "product"
brand: "Cartier"
model: "21 Must De Cartier"
reference: "W10109T2"
price: 1495
currency: "GBP"
condition: "Pre-owned"
year: 2009
category: "Watches"
subcategory: "Cartier"
availability: "In Stock"
url: "https://thediamondbox.co.uk/cartier-must-21-28mm-stainless-steel-w10109t2-2009"
image: "https://thediamondbox.co.uk/uploads/original_image/a8b74b6b0baea277e26b10b551c2ba3f.jpg"
updated: "2026-10-24"
---

# Cartier Must 21 28mm Stainless Steel W10109T2 2009

## Price

**£1,495** (Finance available from £70.33/month)

## Description

This 2009 Cartier Must 21 features a polished 28mm stainless steel case paired with a matching steel bracelet. Its silver-toned dial is complemented by elegant blued steel hands, while the wide brushed bezel displays engraved Roman numerals. The signature blue cabochon-style crown completes the watch's distinctive Cartier appearance.Introduced in the 1980s, the Cartier Must 21 collection offers a contemporary interpretation of the brand's classic design language. Inspired by the number 21, referencing the 21st century, the collection combines elegant proportions with everyday practicality. This model is powered by a Swiss quartz movement, providing accurate and reliable timekeeping.This watch has been checked against technical records to guarantee authenticity and clean history.Comes with original box and papers.Ref: W10109T2

## Specifications

| Specification | Value |
|---------------|-------|
| Brand | Cartier |
| Reference Number | W10109T2 |
| Year | 2009 |
| Condition | Pre-owned |
| Date on card | 22/12/2009 |
| Watchfinder condition rating | Very Good |
| Location | UK |
| Serial | 1340MX882037 |
| Model | 21 Must De Cartier |
| Certified | Yes |
| Papers | Yes |
| Box | Authentic Box |
| Gender | Ladies |
| TDB Limited Lifetime Warranty | Yes |
| Case Size | 28mm |
| Strap design | Stainless Steel |
| Material | Stainless Steel |
| Bezel material | Stainless Steel |
| Dial Colour | Silver |
| Movement | Automatic |
| Bracelet Size (cm) | 15 |
| Keywords | Cartier Must 21, Cartier W10109T2, Cartier Must 21 ladies, Cartier 28mm watch, Cartier stainless steel watch, Cartier Must 21 silver dial |

## About The Diamond Box

The Diamond Box is North London's distinguished destination for luxury watches and gold jewellery since 1997. Visit us at 114 Ballards Lane, N3 2DN, London or call 020 8838 3655.


[View this product on our website](https://thediamondbox.co.uk/cartier-must-21-28mm-stainless-steel-w10109t2-2009)