Was looking for a small CRT for use as a possible projection source.
Hit the junkbox and found an old busted Sony Handycam (CCD-FX11) and ripped off the viewfinder.
Here's the pinout that worked for me.
Careful! It's a little CRT which means there is a dangerously high voltage!
Probably some other uses for it, like a cheap B&W head mounted display.