IBM Selectric Touch keyboard (Model M2)
1395300 buckling spring, US layout
1395706 buckling spring, UK layout
60G3507 buckling spring, labeled as M1 ("Options by IBM" unbundled)
42H0468 buckling spring, US layout, RJ-11 (can be used by making adapter)
73G4614 rubber dome
60G0817 rubber dome, with a big face plate. code name "Lion"
The terminal version is fully PS/2 compatible, and merely needs a passive adapter to map the RJ-45 pins to the appropriate PS/2 ones.