Both pairs are worth having. But apparently he didn't think so, since he was going to toss them, and he didn't treat them very well before that. So I think he should, and would, be pleased with a nice acknowledgement - some nice wines or something along those lines, or, if it's cold hard cash, a hundred bucks or so. Theoretically they are worth substantially more, but equipment needing work, and large and heavy enough to be very expensive to ship, is actually not worth very much. He offered them to you as a gift, and if you go to him telling him that they are valuable, you complicate things for him -- now he has to try to get the best deal, which means he has to clean them up and refinish them, and learn about recapping and test them and so forth and so on, and advertise them, figure out how to ship them and so on and so forth.
Let him give them to you, and thank him sincerely.
And then they are your problem...
I used to buy camera collections, and I came across many widows who made themselves miserable by feeling they had to get the best price for a whole bunch of cameras that she wasn't actually interested in, but knew had value. They could have thrown themselves into the task by learning about cameras and the market, but they hadn't done that when their husbands were alive and might have enjoyed their involvement in the hobby, so why would they want to do it now? So they entertained offers, rejected them, and there the stuff sat... I could go on, but I suspect that all of us have some sense of the despair that comes with having too much stuff, and no idea of how to deal with it.
Let this guy get rid of stuff he doesn't want anymore.