Founded in Lancaster in 1892, at the height of railroad watch glory, and owner of the Illinois Watch Co. since 1927, Hamilton Watch Co. was a flagship of American watchmaking. The quality and precision of Hamilton watches were widely recognized in the United States, including and especially by the U.S. Army, which placed considerable orders during the 2nd World War: during this period, Hamilton manufactured up to 500 marine chronometers per day!
After 10 years of research, Hamilton launched the first electric wristwatch in 1957. Presented as the watch of the future, its launch was accompanied by a vast expansion program for Hamilton, which decided to go beyond American borders to conquer the world. The first target was Europe, and what could be more significant for a foreign watch manufacturer than to set up shop in Switzerland? This was achieved in 1959 with the purchase of the venerable A. Huguenin Fils SA watch factory in Bienne. This company, which had celebrated its centenary in 1957, had excellent industrial facilities and a sales network in Europe, the United States and South America.
In 1962, Hamilton opened branches in England, Belgium and Japan, and launched models combining Swiss technology and American design: the Elipsa in 1962, the Pan-Europ and Estoril in 1963, two names that signaled the brand's European ambitions. Finally, in 1966, it took over the famous Büren Watch Co. in Bienne. Unlike Huguenin, Büren is a manufacture, producing its own movements and specializing in automatic watches. In particular, it was Hans Kocher at Büren who invented the automatic watch with a micro-rotor housed in the movement, launched in 1957, enabling the production of ultra-slim automatic watches. The patent was licensed to prestigious brands such as Universal and Piaget. And at the time of the takeover, Büren was working with Dubois Dépraz on a closely guarded project: the Chronomatic caliber.