I read somewhere that a 7JP4 picture tube is worth about $125. Can anyone verify this? I have 4 of these. Before I post them for sale/trade I would really like to have an idea of prices. I could not find anything on ebay. I have 3 used and 1 nos with original box and warranty card. Thanks, Doug.

I can see them going for that much if they have a bright picture. I mean BRIGHT, like you can see it in a normally lit room very well and it doesn't blur when you turn up the brightness.

The only way to know is to put the CRT on a working chassis and look at it.

Sounds reasonable to me if they are very good.
The NOS one might bring a couple hundred nowadays. I bought one for $99 about 6 years ago.

A NOS? 3KP4 just sold for $305

http://cgi.ebay.com/RCA-3KP4-Television-Picture-Tube_W0QQitemZ330211173204QQihZ014QQcategoryZ73379 QQssPageNameZWDVWQQrdZ1QQcmdZViewItem