Micro Switch 8SW3-2
This is an unidentified 8-key panel with switches that are most likely 1SW11 (source level, sloped), manufactured in week 37 1978. The switches are not wired in a matrix: the VCC and GND traces are shared, but the outputs are all isolated. Curiously there is no edge connector: the connecting leads have to be soldered separately.
These photographs were taken by fricked keyboards and have been placed into the public domain (CC0).