1 GE Type 78 Vacuum Tube Tested Good On Calibrated TV7

1 National Union Type 78 Vacuum Tube Tested Good On Calibrated TV 7

1 Sylvania JAN Type 78 Vacuum Tube Tested Good On Calibrated TV 7

1 Sylvania Hot Stamped Type 78 Vacuum Tube Tested Good On Calibrated TV 7

1 Raytheon Hot Stamped Type 78 Vacuum Tube Tested Good On Calibrated TV 7

1 Wards Hot Stamped Type 78 Vacuum Tube Tested Good On Calibrated TV 7

CECO Type 78 Vacuum Tube, Good, TV-7 Tested

1 RCA Type 45 Coke Bottle Vacuum Tube Tested Good On TV 7