I have:
1 pair of Solvtek 6B4G tubes, less than 10hours use... still havethe boxes. I sold the amp and dont have a need now. They test new as they should in my Hickok 6000a. Asking $80 for the pair.
1 pair of russian 6C4C/ 6B4G tubes. These have never been used. The base is a bit lose on 1, but has not affected its performance.
They test new as they should in my Hickok 6000a.Asking $40 for the pair.