Appears to be in good condition.
NATIONAL UNION JAN CNU 6SL7GT VT-229 UNTESTED VINTAGE AUDIO TUBE
Appears to be in good condition.
Lot of 1 National Union JAN-CNU 6SL7GT VT-229 Tested Good VACUUM TUBE D-Getter
Lot of 1 National Union JAN-CNU 6SL7GT VT-229 Tested Good VACUUM TUBE D-Getter
Tungsol Tube Type 34 NOS Tested
Tungsol 34 tube Tested at 84/100 Location 5H2
Kenrad Tube Type 24A NOS Tested
Kenrad 24A Tested at 86/100 Location 5H2
NIB NATIONAL 6AK5 EF95 VACUUM TUBE (BIN82)
NOTE All drives must to be connected to power for at least 4 hours prior to operation. If this action is not taken, it can ruin the drive.
National Union 6L6G Vacuum Tube Amplitrex Tested NOS 102% Gm
Tested NOS at 117% emissions and 102% Gm on an amplitrex AT1000 tube tester (as photographed)
NATIONAL UNION 6L6G VACUUM TUBE TESTS STRONG
Here is a nice National Union 6L6G shoulder tube. good test result (65% of the life of the tube).
1LB4 NU NOS radio audio loctal amplifier transoceanic vacuum tube valve 1LB4
Tube tests: 90 %.