Most info says you need a pollinator, but there are reports of self-fertile trees. Could be 2-in-1 grafted, if so you should be able to find the graft. Ah, the mystery of trees!

I'm sure the seed is viable and I would be very happy to trade for some.

Are they good? Most asian chestnuts I've come across are absolutely delicious!

It's a rather old tree, several decades old. So I have no idea how to look for a graft on it. It might be two trees since one side is a triple trunk cluster, and the other side is a double trunk cluster. But they are only a couple feet apart and when I asked the previous owners whos grandparents planted it, they said it was a tree, not a pair of trees. I thought perhaps it was on wide spaced root stock?
The whole think looks all exactly the same- the leaves, they way it grows, the nut formation, it even gets those hairy threads all around. Maybe I just don't have a clue what I'm looking for, lol.

I don't have seeds yet, they will probably start dropping sometime next month. That's why I wanted to ask now before they started dropping. But if they are likely viable, I will for sure collect some for trading :)

I don't know if they are good yet. The first year we were here, I didn't realize it was an edible kind of tree, thought it was an inedible kind till the neighbors corrected me. Last year it was so dry what little nut set I left for the wildlife. So this fall is going to be the first chance we really get to try some.

Sounds like 2 trees planted in one hole, which is a good strategy for chestnuts if you don't want them taking over your whole yard.