Vacheron Constantin is presenting us the latest crown piece of theirs. The Traditionnelle Chronograph Perpetual Calendar (reference  5000T/000P-B048) is equipped with the new Manufacture Vacheron Constantin Caliber 1142 QP.

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This new creation is in a 950 platinum version, Vacheron Constantin has opted to combine two key Fine Watchmaking complications: the chronograph and the perpetual calendar.

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The dial features various shades of grey with finishes that differ according to the functions, reflecting the layout of 1940s Vacheron Constantin chronographs.

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The case, wich is a 43 mm, is stepped with a distinctive fluted pattern on the back with the dauphine-style hands and the railway-type minute track. A white tachymeter scale surrounding the dial accentuates the technical nature of the watch.

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The Moonphase is 22K white gold moon disc which is hand-finished. It shows a smiling or melancholy face ,depending on the path of the Earth’s satellite, which is nod to historical pocket watches.

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The watch has a transparent caseback that shows the beautiful 1142QP caliber.

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This new movement 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.

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This newcomer to the Traditionnelle collection will thus be able to keep track of all the vagaries of the calendar without any need for adjustments until March 1st 2100.

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So let's talk about the movement.

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The base caliber of the 1142QP is a Lemania and Vacheron Constantin added theirs perpetual calendar. The oscillation frequency of the balance has also been raised from 2.5 to 3 Hz (21,600 vibrations/hour) so as to increase reliability and shock resistance.

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The  manual-winding movement is 27.5 mm (12’’’) diameter, 7.37 mm thick. It has an approximately 48 hours of power reserve. The movement has 324 components and 21 jewels.

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Like all Vacheron Constantin movements, this new caliber visible through the transparent sapphire crystal caseback was developed and designed to meet the stringent Hallmark of Geneva criteria. This emblem is applied both to the caliber itself and to the finishing of the watch as a whole.

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The Vacheron Constantin Traditionnelle chronograph perpetual calendar is fitted with a handstitched Mississippiensis alligator leather strap secured by a 950 platinum folding clasp.

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The price of the Vacheron Constantin Traditionnelle chronograph perpetual calendar is $150,000.