MATCHED NOS TUNGSOL ROUND PLATE 12SN7GT PAIR - Hickok & FULL PERFORMANCE Testing

(1) Tested Tung-Sol 6SG7 Tube Date Code DP3 Tung Sol 6SG7 Remote Cutoff Pentode

(1) Tested Tung-Sol 12SG7 Tube Date Code MR3 Tung Sol Remote Cutoff Pentode Tube

(1) Tested Tung Sol 6AC7 Tube Date Code 540-3 Sharp Cutoff Metal Pentode Tube

(1) Tested GE 6SG7 Tube Date Code KU General Electric 6SG7 Remote-Cutoff Pentode

(1) Tested Sylvania 6U7G Tube Date Code Z3R Remote Cutoff Pentode Tube

ECC83 12AX7 Tung sol tungsol Square Getter big plate used

TUNG-SOL 6SD7GT SEMI-REMOTE CUTOFF PENTODE FOR OLD RADIOS TEST GOOD