I'm always suspicious of these storied makers who recount their history ... up to 50 or 100 years ago, then jump to the present. What might have happened in the interim? I haven't researched this company, but "Went bankrupt in the quartz crisis, intellectual property bought by Ching Zheng Pong Wong Timepiece and Kitchen Timer Manufactury" is the sort of thing you find sometimes.
CloacaB&M are a true swiss brand. They are owned by the richmonte group (which again own several other very respected watch brands). They are one of the few companies that showcase at SIHH.