While I can’t find this wrench in either Schulz or Cope, they are around. The company, (American Seating Co.) was formed in 1886 in Grand Rapids, MI as the Grand Rapids School Furniture Co. and more or less invented the maple school desk with attached chair. The name was changed in 1906, and the products morphed into a variety of steel, wood, and plastic school and military chairs. This cast iron non-adjustable nut wrench was surely supplied to school system buyer for installation and adjustment of their products. I can remember sitting in one of their classroom desk and chair sets in the mid- to late 1940s. The cast iron handle is embossed with the company same and “Universal Desk”. On the reverse is the number “13986”. They did produce at least one other form (with a different number). This one is six inches long, and has a steel head riveted to the cast iron handle. The width of the fixed opening is 9/16”. It is in tarnished condition, with no rust or pitting. Good+
