national union type 12a tube nos nib hickok tested

national union type 12a tube nos nib hickok tested

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NATIONAL UNION 6SG7GT TUBES

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Pair- 32 ST Bottle Globe National Union NX-32 Engraved Base Mesh Screen Tetrode

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National Union Early 40s 12SL7GT NOS Black Beauty AUDIO TUBE

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National Union JAN CNU 5Z3 VT-145 Hanging Filaments Black Plates TV-7D/U

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1 NOS National Union JAN 6X5GT Vacuum Tube for Vintage Radios & Power Supplies

1 NOS National Union JAN 6X5GT Vacuum Tube for Vintage Radios & Power Supplies

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1 x CNU-5U4g National Union Tube*Black Plates*Hanging Filament*US Navy*

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2, NEW, National Union 5Z3, tall glass, hanging filament, match date pair, 5Z3

2, NEW, National Union 5Z3, tall glass, hanging filament, match date pair, 5Z3

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2 NIB National Union 5Y3GT Tubes (USA) SAME CODE-1952

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1 Matched Pair National Union Black Glass 6SN7GT

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(2) National Union NY-247 Tubes Test Good.

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