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National Union

(image for) 24A Sharp-Cutoff Tetrode Tube (National Union, ST Shape)

24A Sharp-Cutoff Tetrode Tube (National Union, ST Shape)

National Union 24A tetrode tube, new old stock, in original NU box. Tested and...
$41.26
(image for) 47 Power Pentode Tube

47 Power Pentode Tube

National Union 47 pentode tube, new old stock, in original NU box. Tested and...
$60.30
(image for) 76 Triode Detector Amplifier Tube (National Union, ST Shape)

76 Triode Detector Amplifier Tube (National Union, ST Shape)

National Union 76 triode tube, new old stock, in original NU box. Tested and...
$28.37
(image for) National Union 5U4G Full-Wave Rectifier Twin Diode Tube

National Union 5U4G Full-Wave Rectifier Twin Diode Tube

National Union 5U4G tube, new old stock, in original NU box. Tested working and...
$74.51
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