I'm curious now, because I'm currently typing on am ibm Selectric touch(model m2) keyboard. Now I know some of the name is just a marketing hype thing, but I have to wonder if like the last selectric model ever made used this m2 given its name? Looking into it it looks like IBM Electronic Typewriter Model 95 may have used capacitive buckling springs/model f, and the wheel writer may have used buckling springs too. But I'm not certain 100%, and i can't tell if they used model f buckling springs or membrane buckling springs if they did. Does anyone know for sure?