NATIONAL UNION USED 1943 WARTIME 5Z3 VT-145 BLACK PLATE TUBE, TV-7 TESTED #B-3

Vintage Raytheon 5Z3 Vacuum Tube

SYLVANIA US NAVY CHS 5Z3 VINTAGE LARGE BOTTLE ST RECTIFIER TUBE - TESTED TV7

RCA (GM branded) 6J5G vacuum tube tested & guaranteed

Vintage Tested Good Zenith 5X4G Audio Rectifier Vacuum Tube Black Plates

GE 6SL7GT Vacuum Tube, Silver Plate, Tested Good

1 Strong General Electric silver plate 6SL7GT / 6SL7 tube #70088

Raytheon Type 80 Vacuum Tube Black Plate Hanging Filament TV-7 Tested