It sure looks like a Stoeger stock, but I wonder how many
times it has been refinished. It looks like someone removed
the iron sights and filled in the gap left by the removal
of the Lyman 48. The checkering doesn't look all that good. It might have been your lucky day not to have gotten it.

As regards auctions like this in Wisconsin, they charge sales tax
to in state buyers, consequently, it is about the same cost
for a Wisconsin resident to buy the rifle onsite as it would be for someone to buy it from proxibid and have it shipped, and worse for a resident from some other part of the state to buy
it via proxibid and have it shipped.