I have a lot of polyform puzzles, one of my main interests. I'll try to put up more later. Learn more by clicking on polyforms.
This is just one of many checkerboard puzzles that were once quite popular. A 1997 compendium of checkerboard puzzles lists 376 that have been produced, published, or patented. Probably there have been many more. This one has a mixed American selection of 14 metal pieces and is from 1912.