Patrimony Perpetual Calendar

Image
Patrimony Perpetual Calendar - Vacheron Constantin
For the SIHH 2017, Vacheron Constantin presents the new Patrimony Perpetual Calendar in a pink gold version with a new slate-colored dial.

Caliber 1120 QP, a mechanical self-winding movement, developed and crafted by Vacheron Constantin, drives the hours and minutes hands, the moon phase at 6 o’clock along with a perpetual calendar displaying the day of the week in a counter at 9 o’clock, the date in a counter at 3 o’clock, the month and leap year in a 48-month counters at 12 o’clock. This perpetual calendar does not require any corrections until March 1st 2100. Unlike simple calendars requiring manual correction after every month with less than 31 days, the perpetual calendar takes account of the leap-year cycle with its 31-, 30- and 28-day months, as well as the quadrennial recurrence of February 29th. This sophisticated function requires prodigious miniaturisation to mechanically adjust it so as to keep track of calendar irregularities. This miniaturisation has been taken to extremes in order to achieve an ultra-thin perpetual calendar. Caliber 1120 QP measures just 4.05 mm thick, beats at the frequency of 19,800 vibrations per hour, and has a 40-hour power reserve.

This model features a pink gold case framing a slate-colored opaline dial. The slightly convex external zone is adorned with a circular “pearl” minute-track and 18K pink gold applied hour-markers. The hours, minutes hands and calendar pointers are in 18K pink gold. Setting the finishing touch, the saddle-finish black alligator strap is hand-stitched and secured by a folding clasp in the same metal.

Patrimony Quantième Perpétuel

 

Revolving beneath the dial, the moon disc depicts the heavenly vault in pink gold enhanced by a blue galvanic treatment. Each star has been delicately crafted so as to provide an exact map of the sky. Fitted with a sapphire back enabling one to admire Caliber 1120 QP, the 41 mm-diameter case is water-resistant to 3 bar.

 

Featured brand
Vacheron Constantin