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Really Oddball 7F7

Here is an oddball for you.

I guess International Servicemaster (a well-known tube rebrander) really needed 7F7s but had none in stock, so they took a GE 6SL7GT, removed the base, and hardwired it into a 7F7 adapter.

I actually have a few of these.

Did they do this to any other tubes?













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Topic - Really Oddball 7F7 - baileyler 10:45:08 08/16/21 (5)

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