(I know... this is a silly question to ask, but...)
Has anybody figured out what switches these are:

That's the best picture (only picture) I could find. I don't have the DVD or I'd scan a few more shots. I seem to recall springs on the outside of round plungers in one shot of the side of the keyboard.
I know the keyboard is probably a mockup like the rest of the Mother computer, but the switches and keycaps must be from a real keyboard manufacturer. (possibly from a "movable switch" keyboard?)

I'd love to get those keycaps with the weird symbols.