Briggs Flathead Ancient Briggs & Stratton AR6 Engine still chugging along!

Video of this 1947 Briggs Flathead Model AR6 running. You almost wouldn't call this a small engine by today's standards. It is a heavy duty model, no plastic or aluminum was used to build this. I think the only fragile part on the entire engine is the pot metal that was used to build the carburetor.