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空气钟, 机芯 528-8 - Jaeger LeCoultre - 玻璃, 黄铜 - 1980-1990
编号 82345713
编号 82345713
Jaeger LeCoultre Atmos perpetual motion clock, caliber 522, Tuxedo model, serial number 63411, made in 1954. Good running condition keeps accurate time (+/-5min. per week), movement is in good condition, recently cleaned, bellows not original, dated 1967, inspected, works well. The case has some discolouration spots, overall condition is good (see pictures and video for more details https://youtu.be/80GYQ-dL388 ) Secure shippin using double-boxed packing, "from door to door " courier delivery service (DPD, Fedex, GLS,).
Jaeger-Le Coultre's famous 'Atmos' clock was first developed in 1928. The clock is automatically wound without any intervention by the owner. Changes in air temperature make winding the clock's mainspring. A change in temperature of one degree can provide enough power to run the clock for a few days, and the mainspring has enough power in reserve to run the clock for a year. Energy is conserved by the very slow-moving twisting pendulum which 'beats' only twice per minute. The movement is very silent.
Warning!!! These clocks can have troubles to wind in premises with high-quality climate control systems (where the air temperature is very stable).
The clock must not be moved without locking the pendulum - moving the locking lever bellow the dial from the left to the right.
To change the time, the minute hand must be moved by turning it clockwise.