There was a company by the name of the Perkins Electric Switch Manufacturing Company that made very high quality pushbutton, toggle, and rotary switches. I'm fortunate enough to have a few in my collection, along with some very nice brass plates (also from an unknown manufacturer). The pushbutton switch was assembled into a very large "boxy" looking porcelain body - it was almost as large as the inside of a single gang box. Fitting the switch, complete with a pair of knob-and-tube wires must have been an interesting experience.
Mike (mamills)
