Steampunk Swedish Mountain Goggles

I was trolling through the army surplus store near my house today, and I found these amazingly cool brass goggles. They're Swedish mountain goggles, and at $16.99 a pair (with cool tin can case) I thought that they were a pretty good find. They're brass with black paint, showing some wear but they're obviously not too old as the cotton straps are still in very good shape. More pics here.