I came into a large quantity of NOS tubes. Mostly Westinghouse 6L6GB Made in England and Westinghouse 5U4's made in USA. They are not counterfeits because I got them from a power generation station that had been shuttered for almost twenty years and they were for equipment that had long since been replaced. I do not have the original boxes as they were sorted and put into numbered bins. I know that the rectifiers in a lot of Boogies are 5U4's and 6L6's are the power amp stage standard for a lot of brands and models. I think there is a few RCA's of some sort in with them and a couple other brands. I have to clean them up, they have decades of dust on them. BTW, when I say a large quantity, I mean a garbage bag half full.
I need a tube tester to make sure there are not any bad ones. And I plan to keep a few spares for myself and sell the rest.
I am not an expert by any means so tell me what I need to test them and what is a fair price to sell them for. I have seen Westinghouse 6L6's go from $20-$60 online.
TIA