This has everyone I ask stumped. The board is a Siemens 115U CPU (6ES5943-7UA11) from the Simatic S5 rack, circa 1990's. It has some LEDs and two SPDT, O-ring sealed toggle switches on the front, one of which is an exotic ON-OFF-Momentary style. I've tried running the numbers (26-11 06xx), nothing. Tried looking through hundreds of manufacturer logos, nada. Even went to patent trademark websites and searched through countless combinations of "E3" "3E" "EE" "33" etc... nope. Can anyone confirm whom made these switches? Was it Siemens in an act of obscurity?
Inside they are pretty neat. Flipping the lever moves a spring-loaded ball bearing along a pointed track for the "snap" action feel. While the shaft holding the ball bearing, once it reaches position, pushes against a top and bottom set of tiny switch contacts.