Atmos clock serial number dating

According to Jaeger-Le Coultre enthusiast Zaf Basha, the "Galaxy", an upmarket mysterious dial diamond watch, is a collaboration between Vacheron & Constantin and Le Coultre for the American market.It features “Le Coultre” on the front and “Vacheron & Constantin — Le Coultre” stamped on the case.

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The confusion stems from the 1950s, when the North American distributor of Le Coultre watches was the Longines-Wittnauer Group, which was also responsible for the distribution of Vacheron Constantin timepieces.

Collectors have confused this distribution channel with the manufacture of the watches.

Le Coultre clocks include a variety of table clocks, travel clocks, and watches, often with the original combination of Art Deco minimalism and luxury line elegance.

One of the most famous Le Coultre watches, the Reverso, debuted...

The world-famous Atmos clock, which runs solely on atmospheric temperature and pressure, was introduced in 1932.