I have one of the DuMont RA-119As, BTW.
Cosmetically, it's superb. In fact, it's the best set in my collection in terms of origional condition. It belonged to a VP of Engineering of Sprague Capacitors in the 50's.
I have a 27RP4 in new condition with great emissions. I'm thinking of using that instead of the 30. Or, maybe the guts of a modern LCD or plasma tv screen for video, sort of an old/new hybrid.
Didn't mean to hijack the thread. I now return you to our regularly scheduled program...