Vintage New Old Stock Philco 323-5007 1.0 Meg Ohm potentiometer in original box.  3 inch long 1/4 inch diameter half-round shaft.  Operation is very stiff.  Some corrosion on the solder lugs and shaft due to improper storage.  Switch rated 3 amps at 125 volts AC or 1 amp at 250 volts AC.