I mentioned this to Dorkvader, and he said: "Canberra kbs get posted on ebay all the time. I believe they are keytronic foam and foil... The caps are so beautiful but the switches are so disappointing."
Oh well—I'd rather bring stuff to your attention that just seems interesting than take a chance you might miss something truly important.
Wouldn't it be nice if those pretty caps were usable on a good KB? :?)