Crossposted on DT.
I ordered this keyboard from a certain computer supplier in Minnesota for $75. Except for some blemishes and a snapped manual door retainer, this keyboard is in excellent condition. The metal plates show no obvious signs of corrosion, and the contamination shield seems largely intact, and the key feel is still quite tactile.
^the snapped, L-shaped retainer tab
^keyboard uncovered. It's the 75-key typewriter model, p/n 1742720
^the obligatory CANNON cable
^reverse view
^reverse view
^rubber foot
^interior, with the blue contamination shield
^controller board
^controller chip
^keyboard connector
^solenoid
^top case
^the spring-loaded manual door
^the threaded screw-hole