I have the keyswitch from a 2105/2108/2112 type system available, snagged it
from the trash. This is the key switch style that has
an "R" position (ie.
an electronic keyswitch, not just a mechanical
one).
This is the 3 or 4 layer discs with a cord and molex-style connector that
goes to the power supply. No key, no keyhole, just the switch assembly
itself with cord and connector. I have no M machines with that style
keyswitch (mine have all been 'upgraded' to the mechanical keyswitch).
Price... 1xpostage+postage. I would expect postage to be like... 2 bucks.
Jay