RCA RADIOTRON Vintage UX-210 tube 1920s For Sale

Up for sale is a beautiful, vintage RCA Radiotron UX-210 globe-style (balloon) power triode vacuum tube from the late 1920s/early 1930s.• Condition: Cosmetically excellent. The black bakelite base features a very crisp, deep engraving that reads"RADIOTRON UX-210". The glass is tight to the base and the silver getter coating is bright and intact with no signs of milkiness/air leakage. The filament visually appears intact.• Testing: This tube is completely untested as I do not own a tube tester. It is being sold strictly As-Is / Untested for parts, restoration, or collection.• Shipping: Will be extremely securely double-boxed to ensure safe arrival.