Two National Union 25AV5GT Vacuum Tubes NOS Tested on TV-7D/U Tube Tester

Two General Electric 6J7 Vacuum Tubes Tested on TV-7D/U Tube Tester GE

Two 7C5 Vacuum Tubes Tested on TV-7D/U Tube Tester Amperex & Motorola

Two National Union 39 / 44 Vacuum Tubes Tested on TV-7D/U Tube Tester

National Union 6L7 Vacuum Tube Tested on TV-7D/U Tube Tester

Two RCA Type 39 Vacuum Tubes Tested on TV-7D/U Tube Tester

Two Raytheon 6AQ7GT Vacuum Tubes Tested on TV-7D/U Tube Tester NOS

Two RCA 12SA7 Vacuum Tubes Tested on TV-7D/U Tube Tester