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A 3x3x3 with two solutions. The second one allows it to be put into a wooden box.
It is not unknown whether Jean-Claude Constantin ever gave this puzzle a proper name. Therefore one was invented for this entry.
This is one of the shape variants Jean-Claude Constantin custom built in the 1980s and 1990s.
The year given here is just an upper bound.
Thank you to the following people for their assistance in helping collect the information on this page: Georges Helm.
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