Jaeger-LeCoultre, a cornerstone of Swiss watchmaking, originated in the Vallée de Joux with its first forge established circa 1480. The LeCoultre family, pivotal in the region's development since the arrival of Pierre LeCoultre in 1559, founded the LeCoultre forge around 1730. Antoine LeCoultre established the Manufacture in 1833, leading to significant innovations like the Millionometer in 1844 and the crown winding system in 1847. The partnership between Jacques-David LeCoultre and Parisian watchmaker Edmond Jaeger in 1903 marked the genesis of the Jaeger-LeCoultre brand. Known for iconic creations like the Reverso watch in 1931 and the Atmos clock in 1928, Jaeger-LeCoultre has melded technical ingenuity with exquisite craftsmanship, becoming a symbol of luxury and precision in watchmaking