Achille Hirsch

Achille Hirsch was a watchmaker in La Chaux-de-Fonds active from at least 1890 through the 1930s. The company produced watches using the Vigilant and Invar brands, later adopting these names for the company. They were also closely associated with the Nouvelle Fabrique de Tavannes, which bore the Vigilant Watch brand name on the facade.

Montres Invar

Montres Invar is named for the nickel-iron alloy of the same name, which was commonly used in balance wheels.

Brands used in later years by Compagnie des Montres Invar included Amora, Anna, Aristocrat, Catedral, Dandy, Elyon/Immerfort, Grandmaster, La Vogue, Metoda, Nonesuch, Pathfinder, Reis, Stentor, Tontina, Ultonia, Uptown, Utmost, Velox, and Worthy. The company used a key or a stylized V (for Velox) as logos.

Compagnie des Montres Invar of La Chaux-de-Fonds was liquidated in 1992. The company was then located at Rue du Grenier 24 with the administrator listed as Salomon Hirsch. It had been listed there since 1985, when it was managed by Simone Hirsch.