Need Info on 1 inch CRT
 

I have a 3/4 or perhaps 1" CRT. Possibly from a camcorder, don't know.
Haven't been able to find anything. The wearable computer sites may be a
possibility, but I didn't see any leads so far. I want to use it for a
portable DF system.
The number is unreadable. It has yellow ink printing not etched. What
could be the manufacturer: an "N" followed by what looks like a backwards
somewhat stylized "B" What there is of a number looks like R2 then possibly
a 1 and most likely a 5. So it sort-of looks like R215, but much of the ink
is gone. Standard 9 pin. Pins 4-5 must be the filament since they show 4
ohms cold. about 1" dia & 2" long. How about some ideas???

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Steve N, K,9,d, c. i at arrl net will reach me, no commas, of course.