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Questions about tubes and gear that glows. FAQ

RE: How to tell if tube is counterfeit

The etch marks (tube type and manufacturer/date) are hard to counterfeit.

They also have holes in the bottom of the guide pin, which is another good sign.

Assuming you get what is pictured, they look authentic.


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  • RE: How to tell if tube is counterfeit - baileyler 08:36:00 05/02/20 (0)

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