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Lot 74

One owner from new. A fine and rare 'Atmos du Millénaire' with 1000-year calendar, month and phases of the moon. Sold 22 December 2000, in the original box, with papers
Jaeger LeCoultre, No. 696579 , Caliber 556. Circa 2000

2 July 2025, 13:00 BST
London, New Bond Street

Sold for £11,520 inc. premium

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One owner from new. A fine and rare 'Atmos du Millénaire' with 1000-year calendar, month and phases of the moon. Sold 22 December 2000, in the original box, with papers

Jaeger LeCoultre, No. 696579 , Caliber 556. Circa 2000
The signed wedge-shaped glass panelled case raised on three adjustable rhodium plated conical feet, the 5.5 inch dial with outer ring spiralling to give each year between 2000AD and 3000AD, the months revealed in a sector below the XII position, with phases of the moon at VI. The rhodium plated 13 jewel movement with studded torsion balance. Running. Sold together with the original Jaeger Le Coultre outer box with interior packing, instructions for packing/unpacking, guarantee and instruction booklets, blank gilt-edged notebook in its slip cover titled Le Livre d'Or de Votre Millenaire, polished levelling tool and receipt from Mappin & Webb, dated 22/12/2000 for £5425 27cms (11ins) high.

Footnotes

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.

Additional information

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