Dunlap #3726 Bench Plane - I Think

I was given this plane in pretty rough condition by a guy who really didn't know anything about planes. One telltale sign was that the iron was upside down when I got it (bevel up). And while I know a fair bit about planes, I knew little about this particular brand when I started on this one. The plane as found Something look funny here? Maybe the upside down iron explains why the cutting edge was…