VACHERON CONSTANTIN – LES CABINOTIERS Temporis Duo Grand Complication Openface – Minute Repeater Perpetual Calendar Chronograph - Unique Piece 2025
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- A single-piece edition timepiece combining mechanical excellence and
aesthetics in the great tradition of the watchmaking complications that
have marked the history of the Maison
- A new open-faced sapphire dial reveals the beauty and complexity of the movement
- A technical feat of rare complexity, Calibre 2757 S incorporates a
single push-piece split-seconds chronograph, a minute repeater and a
tourbillon regulator with a spherical hairspring
- Aesthetically faithful to the Maison's exacting standards, with fine
hand-finishing on all components of the calibre, which is visible
beneath an open-faced sapphire dial
To bring together in a wristwatch a minute repeater, a split-seconds chronograph and a tourbillon regulator is a technical challenge that has rarely been met. In the Les Cabinotiers Temporis Duo Grand Complication Openface these complications benefit from Vacheron Constantin's latest technical developments and continuous research into materials.
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The evolution of age-old know-how
The complications of this new Les Cabinotiers timepiece epitomise the transmission of watchmaking expertise through the generations – a core value of Vacheron Constantin. In 1819, the Maison produced a pocket watch with independent deadbeat seconds and a quarter repeater, one of the first of its kind. The watch incorporated a deadbeat seconds mechanism – a device that had been developed by various watchmakers in the late 18th century as a means of more accurately measuring very small units of time.
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Designed as an independent mechanism with its own gear train, it enabled the seconds hand to be stopped and restarted independently of the normal timekeeping function and is thus considered to be the forerunner of the chronograph.
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Three of Haute Horlogerie's most emblematic complications, the chronograph, minute repeater and tourbillon are among the most difficult to create, let alone combine. Meeting the challenge, in 2022 the Maison unveiled Calibre 2757 in a single-piece edition Les Cabinotiers watch offering this rare and original combination in a single mechanism.
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Horological mastery
The highly technical Calibre 2757 S incorporates 696 components, with the design of the movement, particularly in terms of its chronograph functions, subject to the imperative of performance. Despite its complexity, the watchmakers at Vacheron Constantin have created a movement of great finesse, barely 10.4 mm high and 33.3 mm in diameter, remaining faithful to the principles of elegance that are a signature of the Maison.
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A centripetal regulator and spherical hairspring
The minute repeater featured in Calibre 2757 S has also benefited from technical developments at Vacheron Constantin. These include an ingenious flying strike governor. This device has two weights shaped so as to act as a brake on the governor's rotating shaft, thus evening-out the energy released by the repeater's spring. To achieve this, it uses opposing centrifugal and centripetal forces. When the governor spins, the centrifugal force pivots one end of the weights outwards so that the other end acts as a brake on the central shaft to bring the rotation and the strike to a steady rate.
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Technical excellence enhanced by Haute Horlogerie finishes
A transparent sapphire dial is the aesthetic signature of the new Les Cabinotiers Temporis Duo Grand Complication Openface. Just 0.5 mm thick, it is distinguished by a highly complex mix of finishes: polished and frosted surfaces alternate on the counters, which are encircled by rings in 5N gold, applied by metallisation on the underside of the sapphire discs; the hour markers are treated with grey NAC and the chronograph markers are engraved and inked. The 30-minute chronograph counter hand and the two chronograph seconds hands are made of PVD-coated aluminium – their olive green colour matched by the green alligator leather strap that attaches the 45mm pink gold case to the wrist.
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Visible through the dial, the sides of the skeletonised bridges are hand-drawn and hand-bevelled and the surfaces are circled. The wheels, with their bevelled spokes, are rolled and polished, a delicate operation that requires special tools when wheels are made of titanium. The metallic colours of the moving parts contrasts with the black NAC coating on the bridges and main plate.
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TECHNICAL DATA
Collection: LES CABINOTIERS
Model: LES CABINOTIERS TEMPORIS DUO GRAND COMPLICATION OPENFACE – Unique Piece
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Reference 9750C/000R-215C
MOVEMENT
Calibre 2757 S
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Developed and manufactured by Vacheron Constantin
Mechanical, manual-winding
33.30 mm diameter, 10.40 mm thick
Approximately 58 hours of power reserve
2.5Hz (18,000 vibrations/hour)
696 components
61 jewels
NAC finishing
Hallmark of Geneva certified timepiece
Indications
- Off-centre hours and minutes
- Small seconds on tourbillon
- Chronograph
- Split-seconds chronograph
- 30-minute counter
- Minute repeater
- Tourbillon
- Power reserve on the back of the watch
CASE
18K 5N pink gold
45 mm diameter, 16.40 mm thick
Transparent sapphire crystal caseback
DIAL
Sapphire crystal
18K 5N pink gold hours, minutes, and seconds hands
Green-coloured chronograph and split-seconds chronograph hands
STRAP
Green Mississippiensis alligator leather, hand-stitched, saddle-finish, large square scales
Buckle
18K 5N pink gold folding clasp
Polished half Maltese cross-shaped
Les Cabinotiers box
Engravings
« Les Cabinotiers », « Pièce unique », « AC » hallmark engraved on the caseback
🔰Single-piece edition
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Press Release - 2025
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Vacheron Constantin
Press Department
10, Chemin du Tourbillon
P.O. Box 95
CH-1228
Plan-les-Ouates/Geneva
Tel. +41 22 930 20 05
Fax +41 22 930 20 06
press@vacheron-constantin.com
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