I had to help clean out my grandfathers shop when he passed away. They wanted me to throw away everything there, not bother with keeping anything. I wound up taking about 1500 new old stock Vacuum tubes he had, I remembered that an audiophile at work bitching about the price of used tube, had unused tubes.
It turned out to be a good decision because I had 10 new tubes, that the used value was $1100. I wound up selling everything as a lot to a serious buyer that wanted them for a huge chunk of change.
Sometimes hoarders have good stuff I guess!