Tung-sol 3223, long plates, Superior 12at7. - $1 (Toledo)

Tung-sol 3223, long plates, Superior 12at7. 1 thumbnail

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Looks like the plates are coated in something, and the pins are gold plated. It's also labelled 5901, and TL 5687WA. In my entire servicing career I have not seen one of these. Just in a box with miscellaneous other tubes collected over almost 4 decades. Waiting to be discovered.

post id: 7906527043

posted: 2026-01-04 18:10

updated: 2026-01-21 15:24

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Tung-sol 3223, long plates, Superior 12at7. - musical instruments -...

Looks like the plates are coated in something, and the pins are gold plated. It's also labelled 5901, and TL 5687WA. In my entire servicing career I have not seen one of these. Just in a box with...