M.S.R.

In 1961, Buser joined with Revue, Vulcain and Phénix to form Manufactures d’Horlogerie Suisse Réunis SA (M.S.R.). In 1973 Marvin also joined M.S.R. The Buser name started to take a back seat in watchmaking from there (as did Phenix), but Buser were reputed to have moved into pressure measuring instruments before seemingly disappearing as a company.