Both tested strong on an Amplitrex AT1000 tube tester with the following results (as photographed): Tube 1- 83% ip 89% gm Tube 2- 72% ip 72% gm
Matched Pair Sylvania 6L6G Green Leaf Smoke Glass Vacuum Tubes Amplitrex 91%
6L6G TUNG-SOL RE-ISSUE MATCHED PAIR NEW BOXED VALVE TUBE
Matched Pair RCA Radiotron 6L6G Vacuum Tubes Amplitrex Tested NOS #1
SYLVANIA JAN-CHS 6SN7GT VT-231 Matching Pair Preamp Tubes Test NOS
Sylvania 6SN7 6SN7GTA Chrome Top Long Bottle Black Plate Matched Pair
JAN-CHS-6SN7GT MATCHED PAIR NOS VT-231 Sylvania NOS 2-Hole Black T 6SN7GT 110%