These are all children's puzzles. The Bear & Leopard puzzles were egg washed, probably from the late 19th century. The Owl & Monkey puzzle is as I received it, in a picture frame. I believe that it was one of a set of three puzzles produced about 1910. The Animal Picture Puzzles (set of 3) and the Dissected Animals (set of 6) were probably produced in the late 1930s or early 1940s.