
Lewis Walduck
Cataloguer
Sold for £11,520 inc. premium
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Atmos du Millenaire:
Designed by Robert Kohler for Jaeger-LeCoultre, the Atmos Millénaire was created to mark the turn of the millennium in the year 2000. A remarkable feat of horology, it features a perpetual calendar accurate through the year 3000 and a moonphase complication, with a deviation of only one day every 3,821 years—a technical marvel symbolizing the passage of vast spans of time.
The Atmos clock's origins date to 1928, when Jean-Léon Reutter developed the first prototype. Jaeger-LeCoultre began commercial production in 1935, refining Reutter's concept of "eternal motion." The Atmos mechanism is powered not by winding or electricity, but by changes in atmospheric temperature and pressure. A hermetically sealed capsule, containing a gas-liquid mixture, expands and contracts with even the slightest fluctuations — this movement is transferred to wind the mainspring. For instance, a mere one-degree Celsius change in the ambient temperature between 15°C and 30°C powers the clock for approximately two days.
Provenance:
The above lot was retailed by Mappin & Webb and was purchased by the current vendor on 22 December 2000. It is accompanied by the original receipts and full documentation from the time of purchase.