I bought a used Cary SLI-80 that had 100hrs on it according to the owner. I have new tubes now, so I don't need the stockers. I put all these guys in and tested, everything works.
(4) Electro-Harmonix KT88EH
(2) Electro-Harmonix 5U4GB
(2) Electro-Harmonix 6922
(2) Cary branded 6SN7
$100 + shipping.