Thought I would share my recent restoration of a 50+ year old B&M CS8B M7 coaster siren. If interested pictures taken during restoration are here: Restoration pics . A short video here: VIDEO This one predates the model M9 in my avatar by about 20 years.
Sterling M-5, Sterling Mechanical Siren Timer, Federal Electric Co. Type B, Federal C3 1/2, Secomak VS1, Federal Type A (Coded & Standard), AF Timer, various other sirens \ controls