Vintage 5U4G fat-glass black plates rectifier tube
"247" OEM code indicates NATIONAL UNION manufactured (Admiral branded)
pro Sencore tested good emission + acceptable LIFE TEST
You are buying 1 National Union manufactured ("247" oem code) 5U4G audio rectifier tube featuring black plates fat-glass construction.
Photos show each plate section testing good emission. Acceptable life test. Tested on our professionally calibrated Sencore TC28 mighty mite tube tester. No shorts or leakage. Also tested in a Seeburg B jukebox amp and the amp performed fine with this rectifier tube installed, so it is KNOWN to work good in-circuit.
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