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Revolutionary Open-Closed Signboard

$79.98 $39.99

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Color: Black

  • Black
  • Brown
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It is a "revolutionary" open-closed signboard that combines interesting typographic tricks and a gear mechanism. 
Just rotate the handle, and open and closed switch in a magical way.
  • Beautiful Structure: The first thing that will impress you is the beauty of its structure.  The many parts are meticulously calculated and assembled to form a unique shape.  You can see a wonder of engineering and an art of mathematics in the design of the signboard.

  • Convinent and Quick: It is not only a mere piece of invention, but rather a practical contraption.It is more convenient and quicker to use than traditional signboards. It's easy to operate and solid enough to withstand daily use. 
  • Suit for Everyone: It is also a toy that can be enjoyed by both adults and children. Just watching it move is oddly satisfying. It can be an educational toy that allows children to learn how gears work while having fun. A revolutionary open-closed signboard that everyone can use.


  • Item Type: Decor
  • Occasion: Home
  • Material: Wood
  • Color: Black, Brown
  • Size: 10.2*5.9 in
    • 1* Revolutionary Open-Closed Signboard
    • Please allow slight measurement deviations due to manual measurement.
    • Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed in the pictures.
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      Revolutionary Open-Closed Signboard

      $79.98 $39.99