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-g…
Greg