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Cartier Ronde Must de Cartier 40 — WSRN0032

Cartier

Ronde Must de Cartier 40

WSRN0032

The Must spirit reborn in steel — a 40 mm dress circle for the modern era.

Estimated market value
$3,800
Confidence: High
Original retail: $4,400

An estimate from current market data — not an offer. Your actual value depends on condition, completeness, and authentication.

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Overview

The Ronde Must de Cartier 40 (ref. WSRN0032) revives the storied Must de Cartier name within the enduring Ronde collection, presenting a 40 mm stainless steel case that balances classical proportion with contemporary accessibility. A silvered sunray dial dressed with crisp Roman numerals anchors the watch firmly in Cartier's grand horological tradition. Powering the piece is the in-house Calibre 1847 MC, a movement developed to bring manufacture-level finishing to the accessible tier of the Cartier catalogue.

History

The Must de Cartier name has deep roots in the maison's history, originally conceived in the 1970s as a way to offer Cartier design to a broader audience through silver-gilt pieces. Cartier reintroduced the Must designation in 2021 across several collections, including the Ronde, signalling a renewed commitment to accessible luxury in stainless steel. The WSRN0032 sits within this modern Must chapter, pairing the house's signature round case architecture with the Calibre 1847 MC introduced in the early 2010s. Among collectors, the revived Must line is regarded as a thoughtful bridge between Cartier's heritage and a new generation of enthusiasts.

Notable points

  • 40 mm stainless steel case offers a versatile, gender-inclusive wearing experience suited to contemporary wrist sizes.
  • Silvered sunray dial with blued-steel hands and Roman numerals references Cartier's classical dial vocabulary without alteration.
  • Calibre 1847 MC is an in-house movement, marking a meaningful step up from earlier Must generations that relied on ebauches.
  • The Must de Cartier name was revived in 2021 after decades of dormancy, lending the reference both heritage weight and modern relevance.
  • Stainless steel construction distinguishes the modern Must from the silver-gilt originals of the 1970s, reflecting shifts in collector taste.

Specifications

Brand
Cartier
Collection
Ronde
Reference
WSRN0032
Years of production
2021 – present
Case
40mm Stainless steel
Case material
Stainless steel
Case diameter
40 mm
Movement
Cal. 1847 MC
Crystal
Sapphire
Dial
Silvered sunray, Roman numerals
Bezel
Smooth steel, beaded crown with spinel cabochon
Bracelet / strap
Leather strap
Water resistance
30 m
Power reserve
42 h
Type
Dress
Worn as
Men's
Also known as
ロンドマスト

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