Wooden puzzle set of 3

Test your logic and creative thinking with this set of three full size Kongming Lock brain teasers. The Kongming Lock traces it's roots back to ancient China. Historically, these wooden puzzles were used as a form of entertainment and intellectual exercise for nobles and scholars during the Han Dynasty (206BC-220AD). These puzzles come in different shapes and sizes, with different internal structures. The mixture of concave and convex parts inside the three-dimensional shape mesh perfectly. They are usually easy to take apart and difficult to reassemble. This is a new puzzle with solution page, I took it out to photograph. There is a bit of the print on the box torn where the price was removed- see picture