Back to overview In 1927, Swiss engineer Jean-Léon Reutter succeeded in constructing a movement that required only 1/1000th of the energy of a conventional pendulum clock. The idea of using temperature fluctuations to drive the movement was now a reality. Jacques-David LeCoultre discovered the Ur-Atmos in the store window of the Paris branch of his business friend César de Trey. He had obtained the exclusive distribution rights for the watch. LeCoultre immediately recognized that the movement was of inferior quality and contacted Jean-Léon Reutter, who had already patented his invention in France in 1926. Together they eliminated the weaknesses of the model and made it ready for series production. The Swiss manufacturer LeCoultre took over the production and, together with César de Trey, the distribution. From 1936, the Atmos was produced in Le Sentier.
980 CHF
In 1927, Swiss engineer Jean-Léon Reutter succeeded in constructing a movement that required only 1/1000th of the energy of a conventional pendulum clock. The idea of using temperature fluctuations to drive the movement was now a reality. Jacques-David LeCoultre discovered the Ur-Atmos in the store window of the Paris branch of his business friend César de Trey. He had obtained the exclusive distribution rights for the watch. LeCoultre immediately recognized that the movement was of inferior quality and contacted Jean-Léon Reutter, who had already patented his invention in France in 1926. Together they eliminated the weaknesses of the model and made it ready for series production. The Swiss manufacturer LeCoultre took over the production and, together with César de Trey, the distribution. From 1936, the Atmos was produced in Le Sentier.
980 CHF
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