I have a few unusual (to me) backrests and I'd like to know who made them. They could be one-offs from good home woodworkers, but they are crafted so well that they may be from commercial builders. I wonder if anyone out there has seen anything like them before. The first one shown here is made of a single piece of spruce or similar, backed up by two horizontal braces of oak or ash. It is 18.5" tall by 11.5" wide, and is curved laterally - concave front and convex behind. No hint of a maker's label. Any ideas?