Last vintage keyboard assembly I received in a lot of vintage computer equipment. This one is a Micro Switch keyboard that has been mounted on an older keyboard plate. This Micro switch keyboard is from 1975 so I wonder how old that keyboard mounting plate is? I don't know the original application but I'd love to. Seems to be a terminal of some kind from the added key labeling?
I did some Googling. Would this be a hall-effect keyboard? It does feel like a great keyboard.
Here are some pics: