Vintage Lucite Interlocking Puzzle CubeNot so easy to photograph, but really a terrific object, whether or not one ever attempts to take it apart and try to put it back together again. With a little feeling around, you can find two center pieces that have some give, and will pull all the way out to start to deconstruct it. I'm a little nervous to try, content to treat it as a great looking little modernist sculpture with a secret but you may be braver than I! Late 60s or 1970s I'd guess,