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Another calendar cube. This one is from the original cube craze and was sold in Japan.
Little is known about this calendar cube.
The markings on the surface and the leaflet (which reads "Ideal Toy Corp" in one corner) suggest that it steems from the original cube craze.
It was sold in Japan.
Everything else is unknown.
Thank you to the following people for their assistance in helping collect the information on this page: Andreas Nortmann, Lawrence Cuthbert.
This puzzle can be found in collections of these members:
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