Leonidas is a familiar name to chronograph aficionados, but the history of the company is long and interesting, dating back to 1841 and connecting two great names in Swiss watchmaking, Bourquin and Jeanneret, and the company was linked to both Heuer and Berna.
Industrialization of watchmaking came to Switzerland in the late 19th century and is embodied by the huge Longines factory on the Suze river in Saint-Imier. But steam power came first, enabling the construction of factories across Europe and the United States, including Usine du Parc, home and namesake of Excelsior Park. This is the story of the rise and fall of steam power in Saint-Imier and the exceptional stopwatches made there. It is also the story of the end of steam and of the Excelsior Park factory, and the reasons for its failure.