6SN7 VT-231 Mixed LOT 10 TUBES TESTED NOS SYLVANIA TUNG-SOL CBS TV-7 TESTED.

MIXED BRANDS SEE ALL PICTURES AND TEST RESULTS

FROM A RETIRED AUDIOPHILE AND RADIO COLLECTOR.

TESTED ON TV-7D/U REBUILD AND CALIBRATED BY DAN NELSON ON 6/1/26

SOUND TESTED WITH NO ISSUES.