Bought a little box of wrenchs thurs to get a little Snap-on box rachet. Had a few old Craftsman oew's;a Thorsen and a couple of other wrenchs. Also had this adjustable which I presumed to be another two for a dollar Ford wrench which needed to be dispatched to the local auction at the first opportunity. All marking was covered with a thick layer od dirt,grease etc. Since I was cleaning the other wrenchs I decided to knock the crud off this one too. To my surprise it turned out to be a Massey-Harris MP1. Won't make my fortune but is a keeper; hence the admonition to look them all over before discarding.