I got this toolbox at auction because I wanted a wrench in it and it was sold as a box lot. It was cheap probably because it was all oily inside. Everything in the box was 1920's or slightly later, and then when I got it home noticed the toolbox. The handle is marked F3333M, and I have no idea what it was originally. The toolbox is 20" long, 7" wide and 7" deep and weights 20 pounds empty since it is made from 1/8" sheet steel. It is all riveted together, no bolts or welding. All the corners are rounded so it is obvious that a brake was not used. I will keep it as I have never seen anything similar.