Vacheron Constantin Traditionnelle Complete Calendar Openface

Classically inspired with its round case featuring a fluted back, its railway minute-track and its Dauphine-type hands, the Traditionnelle complete calendar openface model adopts an avant-garde profile with these two distinctive versions. The openworked sapphire dial reveals Calibre 2460 QCL/2, whose mainplate and bridges are highlighted by anthracite NAC treatment. The triple calendar display, complemented by a precision moon phase, gains in depth through its functional and contemporary style.

Revisiting the fine historical traditions of Geneva watchmaking

Vacheron Constantin's Traditionnelle collection, which perpetuates the spirit of Geneva's watchmakers during the Age of Enlightenment, adopts a highly sophisticated style with two new models equipped with a complete calendar. Framed by a 41 mm case in 18K white gold or 18K 5N pink gold, they appear in an openface version with a sapphire dial. 

This transparency brings out the details of Calibre 2460 QCL/2, which adopts a contrasting anthracite grey colour achieved by NAC galvanic surface treatment. This new interpretation combining contemporary design and watchmaking heritage, is reminiscent of the Traditionnelle Twin Beat perpetual calendar model presented in 2019.

Airy construction

The characteristic features of the Traditionnelle collection – including the stepped round case and lugs, the fluted caseback, the slim bezel, the railway minute-track, the bi-facetted Dauphine-type hands and the gold baton-style hour-markers – embed these two models firmly in the watchmaking heritage of the Maison. 

The opening onto the movement structure – perfectly visible on both sides of the watch and featuring an anthracite grey colour achieved by NAC treatment – highlights its mechanical power. Surrounded by a slate grey opaline flange on which a central hand points to the date, the upper part of the sapphire crystal dial features a likewise slate grey guilloché segment as well as applied gold hour-markers. The resulting three-part dial overlooks the sapphire discs providing an aperture-type display of the days and months. 

The moon-phase disc, with its two realistic transferred depictions of Earth’s satellite, is also covered by a translucent sapphire mask. This airy construction provides a chance to admire the various movement components, including the bridges and mainplate featuring an original vertical upright finish on the front.

The "openface" design highlights the technical nature of the Traditionnelle complete calendar openface watch. This complication, also known as the triple calendar, indicates the date, day and month, complemented on these models by a moon phase.

Technical specifications: 

Vacheron Constantin Traditionnelle Complete Calendar Openface

Reference: 4020T/000G-B655 (white gold) 

Reference: 4020T/000R-B654 (pink gold) 

Case

• Material: 18k white gold/18k 5N pink gold
• Diameter: 41 mm diameter
• Thickness: 10.7 mm
• Transparent sapphire crystal caseback
• Water-resistance tested at a pressure of 3 bar (approx. 30 metres)

Dial and hands

Assembled in three parts:

• Slate grey guilloche upper part
• Slate grey opaline flange
• Sapphire crystal with 18K gold hour-markers

18K white gold/18K 5N pink gold applied hour-markers, hour & minutes hands
18K gold blackened date hand with white crescent

Movement

• Caliber 2460 QCL/2
• Developed and manufactured by Vacheron Constantin
• Mechanical, self-winding
• Diameter: 29 mm (11¼’’’) 
• Thickness: 5.45 mm
• Frequency: 28,800 vph (4 Hz)
• Number of parts: 312 components
• Number of jewels: 27
• Hallmark of Geneva certified timepiece
• Approximately 40 hours of power reserve

Functions/Indications

• Hours, minutes
• Complete calendar (day of the week, date, month)
• Precision moon phase

Strap and buckle

• Grey Mississippiensis alligator leather with calf inner shell, tone-on-tone stitching, square scales
• 18K white gold/18K 5N pink gold buckle
• Polished half Maltese cross-shaped

MSRP: CHF 47'900

For more information, please visit vacheron-constantin.com