Vintage GE General Electric 6BG6GA Vacuum Tube

Two General Electric 14A7 Vacuum Tubes NOS Tested on TV-7D/U Tube Tester GE

General Electric 6SG7 Vacuum Tube Tested on TV-7D/U Tube Tester GE

General Electric 2B7 Vacuum Tube Tested on TV-7D/U Tube Tester GE

General Electric 6X5GT Vacuum Tube Tested on TV-7D/U Tube Tester GE

Two 12SA7 Vacuum Tubes Tested on TV-7D/U Tube Tester Sylvania & GE

Two 12SK7 Vacuum Tubes Tested on TV-7D/U Tube Tester Zenith & GE

General Electric Type 76 Vacuum Tube NOS Tested on TV-7D/U Tube Tester GE