Jaeger LeCoultre Master Ultra Thin Perpetual Calendar Black Dial 39MM

More about Master Ultra Thin Perpetual Calendar Black Dial 39MM

This is a stainless-steel Jaeger LeCoultre Master Ultra-Thin Perpetual Calendar Q1308470. It has an alligator leather strap with a stainless steel deployant buckle, and a scratch resistant sapphire crystal. It has a signed pull-out winding crown, a corrector for the perpetual calendar function at 8 o'clock on the left-side case band, and a screw-down exhibition sapphire display case back secured with 4 screws and engraved with "JAEGER-LECOULTRE – SWISS MADE – 5ATM," a serial number and the 1000-hour master control stamp. The 39mm diameter solid two-body case, gently curved lugs, and angled flat bezel are polished. The dial is black with applied polished steel faceted dart index hour markers, polished steel dauphine hands, a luminous outer white pip minute track, and a steel center sweep second hand with a wedge counterbalance. There are three recessed black subsidiary dials with White Arabic numerals, markers, and polished dart-style indicator hands including a day register at 9 o’clock, a month dial at 6 o’clock, and a radial date at 3 o’clock. There is a 4-digit year aperture window between 7 and 8 o'clock, and a hemispherical color moon phase is at the 12 o’clock position. There is a security indicator located in the center of the dial. It has a 38-hour power reserve at full wind, and it's water resistant to 50 meters/165 feet. The 9.2mm thick case, dial, and movement are all signed. This Jaeger LeCoultre Master Ultra-Thin Perpetual Calendar Q1308470 has a mechanical automatic self-winding Jaeger-Le Coultre caliber 868/1 movement embellished with Cotes de Geneve and perlage embellishment, a shock absorber system, blued screws, and a skeletonized signed oscillating weight with a rose gold mass. It's constructed with 46 jewels, 336 components, a straight-line lever escapement, a self-compensating flat balance spring, and the mechanism oscillates at a frequency of 28,800 vph (4Hz). This Jaeger LeCoultre Master Ultra-Thin Perpetual Calendar Q1308470 was introduced at the SIHH exhibition in 2016. it was been tested for 1,000 hours (41 days) before leaving the manufactory. After initial setting it won't require an adjustment until the year 2100; the mechanism keeps track of the length of each month including the 29th of February every leap year.

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