Robert Cart S.A. was located in Le Locle, Switzerland by 1922. The young brand already boasted of producing “qualité supérieure” complicated watches, including repeaters, chronographs, perpetual calendars, and ultra-thin watches. This put it in competition with Paul Buhré, H. Barbezat-Bole, and H. Moser & Cie. who were also located in the city. In the 1970s, all of these companies would come together under Dixi.
In the 1920s, Robert Cart was located next door to rival Paul Buhré on Rue Beau-Site, also the home of the massive Tissot factory. In the 1930s, the company moved to a nearby building at Rue des Tourelles 5.
Robert Cart patented a jump hour and rising minutes display by 1930 and used this in both pocket and wrist watches. The company lasted through World War II and boasted a prize at the Neuchâtel Concours in 1948.
In the 1960s, Robert Cart specialized in ultra-thin watches, building an inventory of movements produced by Frédéric Piguet of Le Sentier. But the consolidation of that era saw them acquired by Dixi and merged with Paul Buhré. The ultra-thin movements would be used by H. Moser & Cie. after they are also acquired by Dixi in 1974.
On October 29, 1988, Robert Cart (along with H. Moser & Cie., Jean Perret, Luxor, Paul Buhré, Terrasse, and Zodiac) was officially dissolved and integrated into Zenith. These brands were officially abandoned in 1989. Zodiac would be re-launched in 1990, Moser in 2002, and the rest would be mostly forgotten.