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National Union NX-80 - globe bottle, engaved base
 National Union NX-80 - globe bottle, engaved base National Union NX-80 - globe bottle, engaved base |
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1 in stock
Item Number: 699
Manufacturer: National Union
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This very rare National Union NX-80 rectifier tube has a large globe bottle and black plates. The engraved base reads "National Union NX 80."
Tube tests as new with precisely matched sections. It ships in a new white box.
This tube is sold individually. Photo is of actual tube. |
The 80 is the vintage 4-pin predecessor to the 5Y3 rectifier tube. This rare tubular envelope version by GE has a bottom D getter and round black plates. The full black base has red or white lettering. Tube tests as new.
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The 80 is the vintage 4-pin predecessor to the 5Y3 rectifier tube. This ST envelope version by Raytheon has a bottom D getter and flat black plates.
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Price: From $14.00 to $30.00
The 80 is the vintage 4-pin predecessor to the 5Y3 rectifier tube. This ST envelope version by RCA has an engraved base.
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Price: From $49.00 to $99.00
This RCA UX-280 4-pin rectifier tube has a globe bottle, smooth black plates, and an engraved base. Very rare tube to find testing as new!
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The RCA UX-280 tubes in this precisely matched pair are early 80 rectifier tubes. They have globe bottles, smooth black plates, and foil square getters. Their engraved bases read "RCA Radiotron." Very rare tube to find testing as new!
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TC Tubes specializes in precision testing and matching of vintage and new production vacuum tubes for guitar & bass players, audiophiles, and DIY tube audio enthusiasts. Our website features secure payment options and fast, convenient shipping around the world.
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