Vacheron Constantin revisits one of its most iconic models, the Traditionnelle Chronograph Perpetual Calendar, equipping it with the new Caliber 1142QP, a state-of-the art movement which replaces the previous 1141QP.
Slightly thinner of its predecessor, the new movement uses the Calibre 1142 that we have recently seen also in the Historiques Cornes de vache 1955 as its base. It drives the perpetual calendar functions – with indications of the date, days, months, leap years and moon phases – as well as the chronograph functions with a direct-drive seconds hands and 30-minute counter at 3 o’clock, positioned opposite the small seconds at 9 o’clock.
The oscillation frequency of the balance has been raised from 2.5 to 3 Hz (21,600 vibrations per hour) in order to increase reliability and shock resistance. The power reserve is 48 hours.
Framed by a 43 mm x 12.94 mm platinum case, the dial features dauphine hands and various shades of grey with finishes that differ according to the functions. Standing out against a slate-coloured opaline base, the small seconds and chronograph minute counters are distinguished by a circular-brushed ring with snailed centre. The overall layout is reminiscent of 1940s Vacheron Constantin chronographs.
The 22K white gold moon disc is hand-finished and provides a symbolic depiction of a moon face that, depending on the path of the satellite, is alternately smiling or melancholy.
Through the transparent sapphire crystal caseback it is possible to appreciate the exceptional level of finishing of the movement in line with the stringent Hallmark of Geneva criteria.
Fitted with a hand stitched Mississippiensis alligator leather strap, the Vacheron Constantin Traditionnelle Chronograph Perpetual Calendar (ref. 5000T/000P-B048) is delivered with a watch winder and a corrector pen. The price will be around US$ 150,000. vacheron-constantin.com