Dating an atmos clock

Page first featured March 31, 2010

A serial number can be used to date a vintage Le Coultre Atmos clock, and a repair technician may locate a date on a clock's bellows -- the bowl shape on the back that acts as a motor.

For timekeeping it uses a torsion pendulum, which consumes less energy than an ordinary pendulum.

The torsion pendulum executes only two torsional oscillations per minute, which is 1/60th the rate of the pendulum in a conventional clock.

As of this posting, the more common types of Atmos clocks have been trading at prices as low as 0 and as high as Image: Atmos clock crop 200.jpg|right|frame|"In the year 1833, the Le Coultre Company was founded in Switzerland.

The invention of the clock that they named the ATMOS was such a revolutionary development, it stood the clock world on its ear.

Each clock is sealed and works on changes in temperature and mercury vials.

Determine whether or not the Le Coultre Atmos clock functions and keep accurate time.

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A serial number can be used to date a vintage Le Coultre Atmos clock, and a repair technician may locate a date on a clock's bellows -- the bowl shape on the back that acts as a motor.

For timekeeping it uses a torsion pendulum, which consumes less energy than an ordinary pendulum.

The torsion pendulum executes only two torsional oscillations per minute, which is 1/60th the rate of the pendulum in a conventional clock.

As of this posting, the more common types of Atmos clocks have been trading at prices as low as $300 and as high as $1,200.

These prices would be reflective of a typical Atmos clock - such as a model/caliber 519, 526, 528 and/or 540 and with the standard brass, gold plated case.

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A serial number can be used to date a vintage Le Coultre Atmos clock, and a repair technician may locate a date on a clock's bellows -- the bowl shape on the back that acts as a motor.For timekeeping it uses a torsion pendulum, which consumes less energy than an ordinary pendulum.The torsion pendulum executes only two torsional oscillations per minute, which is 1/60th the rate of the pendulum in a conventional clock.As of this posting, the more common types of Atmos clocks have been trading at prices as low as $300 and as high as $1,200.These prices would be reflective of a typical Atmos clock - such as a model/caliber 519, 526, 528 and/or 540 and with the standard brass, gold plated case.

,200.

These prices would be reflective of a typical Atmos clock - such as a model/caliber 519, 526, 528 and/or 540 and with the standard brass, gold plated case.

Search for dating an atmos clock:

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You can also refer to our Atmos Gallery Page for help in identifying the make and model of your clock.

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