Jeager la Coultre Cockpit clock - 1930-1940 - 8-day...

For sale, this excellent example of a military-issued 8-day travel-time chronograph aircraft clock by Smiths from 1954, the movement is by Jaeger-LeCoultre. The clock is in exceptionally good and original condition. Fully working and keeps time very accurately. Fully marked backplate and original old label. Mounted in a good custom-made holder for use as, for example, a desk clock. Diameter of the clock hands 7.5 cm, size of the holder 15 cm by 14.5 cm by 8 cm HOW DO WE DATE THIS TIMEPIECE? From the serial number on the back of the case we can date this cockpit clock precisely to 1954. This type of cockpit chronograph has a long lifespan. At the start of World War II they were found in Hampden bombers, and by 1958 there were military surplus models available (without the military arrow markings, which this clock does have, incidentally), and one made its way to the dashboard of the Ferrari 250 Testarossa that won Le Mans. The models around 1954 were intended to be mounted in fighter aircraft, with the two main airplanes launched that year being the Hawker Hunter and Supermarine Swift. These did have the military "Broad Arrow" (arrow) which this clock also has. The movement is a high-quality Swiss Jaeger-LeCoultre 330, which has a chronograph for the elapsed time dial (time of trip) at 12. This can be paused, for example when you stop to refuel, or reset to zero independently of the main clock. Because it is an eight-day movement, it is ideal for use as a desk clock that is wound at the start of each workweek. It can be used as is, with the holder. Or perhaps mounted on a plate to replicate the 2.5" holes with spacing on the outside of the case, and that is how it would have been mounted in a cockpit. The left button is extendable and sets the time, when pressed the movement is wound (unusually for a clock) it often happened that pilots attempted to wind the clock clockwise, which caused them to break, it is also better not to wind the clock completely tight), The right button stops the travel time completely and resets the chronograph mechanism. The middle button at 6 o’clock starts and stops the "time of trip" on the dial at 12 o’clock, which is to keep track of the travel time, for example if a pilot had to land to refuel the flying time was stopped with the middle button at 6 o’clock, when the aircraft went back into the air the middle button reactivated the “time of trip”, If the round circle above 6 o’clock is green, the travel-time hands move; if it is red, these hands stay still. It works well and the speed of the movement can be adjusted via a slider at the back of the case. The paint is all original, as are the dial and the hands of both dials. Size Width 82.6 mm (3.25 inches) Case thickness 41.0 mm All measurements approximate. So again: How this clock works: The metal-cased clock has a Swiss-made Jaeger-LeCoultre 8-day movement with 13 jewels. It is a keyless movement with a 7.5 cm 12-hour black dial, luminous Arabic numerals, and an additional 12-hour dial that records the 'time of the trip'. The high-quality movement provides a chronograph action for the time of the trip. Two buttons at 4 and 8 o’clock control the operation of the clock and there is a lever behind a slide at the rear of the case for adjusting the speed. The left button acts as the winder (turning counterclockwise) and, when pulled out, can be used to set the time. The button at 4 o’clock stops the second hand when pressed and another press starts it again. A third ‘arrester’ button at 6 o’clock is used to interrupt the travel-time of the time-of-trip movement so that, on a flight with interim landings, the travel time hands can be stopped during the period the aircraft is not in the air and restarted when the flight resumes, thereby recording the actual flying time for the entire journey. The button is linked to the colored flag indicator visible through a diaphragm above 6 o’clock on the main dial. When the flag shows green, the travel-time is stationary; when it shows red, the travel time is “registered,” and the seconds hand must also be stopped for that purpose.

Schätzpreis:€450

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