How to tell if a CRT is rebuilt?

[n2bew]

Thanks for the reply, I was hoping so!
It tests very good and I am guessing does not have a lot of hours on it. This will be my first restoration of a TV and looking over the chassis it has all original wax caps and bumblebee's with no evidence of recent work on it. I did find the horizontal output tube was cracked and had white deposits in it indicating someone ran the set after it broke so they may have just "put it out to pasture" after that and never tried to get it fixed again. The high voltage fuses were still good too, so this may be a very promising canidate for restoration.
Thanks again.
Tom

[Kevin Kuehn]

I suspect that after a CRT type fell out of popularity, that there were no new versions of it being made. Even RCA reused glass envelopes for their Silverama tubes. Yet some Silverama tubes clearly stated "all new materials" on the box. I doubt there were any new evelopes being made for 10BP4's or 12LP4's into the early 60's. And to think that we used to drink soda from rebuilt bottles.