I was watching "A Plague on Maurice and Samantha" and noticed for the first time Dr Bombay's silver protective suit...it looked very familiar. I believe it was the Guy Williams space suit from "Lost in Space." The details seem to match.

http://i54.photobucket.com/albums/g112/trevor22a/Main/bomb2.jpg

http://i54.photobucket.com/albums/g112/trevor22a/Main/bomb1.jpg

http://i54.photobucket.com/albums/g112/trevor22a/Main/bomb0.jpg

http://i54.photobucket.com/albums/g112/trevor22a/Main/bomb3.jpg

It does look like the same suit.

Guy Williams filled out his suit nicely instead of Bombay.