13 tubes

Best I can make out they are:

6C4. 6CB6A. 2021. 6C4. 6K 6UA6. 6CB6A. 6BH6. 6AL5. 3S4. 6BE6. 6J6 1 can’t read (tall one)

Can't tell you anymore. Got left these by my father when he died and I am liquidating his tubes. He was a ham enthusiast and fixer upper buyer/seller. Just going by pricing I see online. Anything I can do to check them out let me know.  I have limited tools: a multimeter if that helps. All items "as is".

                                          Thanks for looking!!

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