I did find a candidate switch, at Surplus Sales of Nebraska for $5.00 http://www.surplussales.com/switches/SWToggle-1.html
(SWT) 8V10128 Microswitch SPDT toggle switch. 25 ma @ 20vDC. PC mount. ON-ON. 0.5" x 0.9"L Blue Paddle. Microswitch Co. was started by Burgess Battery (Freeport, IL) in 1930s. It has been owned by Honeywell Sensing and Control since 1950. https://sensing.honeywell.com/honeywell-sensing-basic-toggle-rocker-range-guide-001032-13-en.pdf Greg
