Item Number: 3151657
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First developed in 19th century Britain, this die-cast zinc cube and key is an ancient puzzle that still baffles minds today.
This cast metal puzzle was designed by the young Dutch phenomenon, Oskar, consider to be one of the world's brightest puzzle creators.
The gear exhibits a unique kind of movement. Once together in its final form of beauty, the gear fixed in place in the cubic box could very well serve as a desk decoration to satisfy a kind of soothing, intellectual curiosity.
Hint: the key to solving this puzzle is teeth.
Recommended for ages 8 and up.