[KCMike]

Yes it has came up before on the power switch/tone control. They can be hard to find. Go to philcoradio.com at bottom of page and under resources look up Mark Oppat. He sells many type of old radio switches.
That is a transformerless radio . Be warned that the chassis can be energized based on the way you have plug in outlet.
If you run the radio without a speaker for a load you could do damage to the rectifier tube.