Jaeger LeCoultre 142.8.92 Master Geographic SS / SS (34434)

34434 Jaeger-LeCoultre 142.8.92 Master Geographic, Q142892, stainless steel on a stainless steel bracelet, automatic movement, date, power reserve indicator, second time zone, night and day indicator, water resistant to 150ft, sapphire crystal, diameter: 38 mm, thickness: 11.5, like new with original box and papers (undated) and Jaeger LeCoultre factory service papers from April 2019.

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More about Jaeger LeCoultre 142.8.92 Master Geographic SS / SS

This is a stainless steel Jaeger LeCoultre Master Geographic, Q142892. It has an integral jubilee style stainless steel bracelet, and a scratch resistant sapphire crystal with anti-reflective coating on both surfaces. It has a solid case back engraved with the Master logo. The 38mm diameter solid three-body case, downturned lugs, and flat bezel are polished, with a second winding crown at the 10 o'clock position for selecting the city of a second world time zone. The dial is silver with applied steel dart index hour markers, black luminous steel dauphine hands with luminous inserts, a central sweep second hand, and an outer ring with minute/second divisions. There is a subsidiary dial for the days of the month at the 2 o'clock position, an aperture arc with a bidirectional rotating disk with the names of world capitals at 6 o'clock, and an up-down power reserve sector at 9 o'clock. It's water resistant to 50 meters/150 feet, and it has a 40-hour power reserve at full wind. The 11.5mm case, dial, and movement are all signed.

The automatic self-winding Jaeger LeCoultre caliber 929 movement is rhodium-plated, with fausses cotes embellishment. It's constructed with 38 jewels and a shock absorber mechanism. It includes a straight-line lever escapement, and a monometallic balance adjusted to 6 positions. It has a self-compensating flat balance spring, a micrometer regulator, a 22K gold rotor segment, and a hacking seconds mechanism.

In 1946 Jaeger LeCoultre began designing round automatic watches that were the forerunners to the Master Control line, and they debuted the first automatic watch with a power-reserve indicator in 1948. In 1990 they introduced the Geographique, a dual time-zone watch, and in 1992 the first Master Control watches were produced. This watch and all Jaeger leCoultre timepieces are submitted to 1000-hour series of tests that are their benchmark examinations.