(!!!) (Pair) UX-226 RCA Radiotron balloon used/good 1930 era (3.9ma and 3.6ma)

Category: SKU: TOY394923

$10.80 $35.99

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1 pair) UX-226 RCA Radiotron balloon used/good 1930 era – same build

1 tube) 3.9ma Gm=800 slightly taller bottle

1 tube) 3.6ma Gm=900

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