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Piston Box designed by Marcel Gillen (invented by Tadao Muroi) and made by Bits & Pieces
The Piston Box puzzle is also known as Internal Combustion or Pandora's Box. This is a heavy metal puzzle for its size, weighing in at 329 grams for all 4 pieces and box frame. Assemblies that require different numbers of steps are possible, making this several puzzles in one!
The puzzle was made pre-2000. The pieces and frame have a nice weight and the action is smooth.
