To me, this would have no collector value given nothing matches. I do have a shooter that's a gen 1 slide on a gen 3 frame and only kept it because the slide is an early number. But would only be worth the parts price for someone trying to restore an original.
That said, I've seen a lot of run of the mill used 17s selling for over $500 this month. All the stores are empty where I live and the dealers can't get more inventory from Glock.