we really like the Amperex tubes - if you can find some that were made for HP, wonderful. I have this magnifying glass program that you can load on your desk top and use when looking at pics of tubes on line - you can read date codes, etc. If interested, email me and I'll reply with program attached.
tubeman.com could give you some information for going prices. you may want to see thread on "deals gone bad" to get some information on someone(private) that you don't want to deal with. good luck!
tubeman.com could give you some information for going prices. you may want to see thread on "deals gone bad" to get some information on someone(private) that you don't want to deal with. good luck!