Dear All,
I've had an e-mail from Karen Orton who has been in contact with Claude Paillard. He's the French chap who makes his own tubes/valves at home, generally triodes. His home-page is here, in French, but with an English 'translate' button at the top which 'sort-of' works...
http://paillard.claude.free.fr/
Karen was in contact with Claude regarding homemade CRTs...not an easy undertaking!! At this point I do not know what Claude's response was, we'll wait and see..
There's quite a lot of sites and YouTube videos regarding Claude Paillard, just Google his name.
In the exchanges between Karen and Claude, Karen mentioned NBTV and Claude sent on these few scans which are of interest. The larger hi-res versions are within the zip-file below.
Steve A.