I would either send them and pay a small fee to a reliable Tube supplier..or Ask someone on this Audiogon site that has knowledge and owns a calibrated tube tester to test them for you.....Other than that its not worth taking a chance unless your willng to take that risk?
Tubes?
I recently came across a few boxes of various vacuum tubes. Is there any way to quickly test whether or not they're still good? I've read stories about tube testers being at the corner five-and-dime, but it seems like those setups are hard to find these days.
The lack of detail in this question is meant as testament to my knowing very, very little about tubes, so I would appreciate any insight.
Thanks!