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The P.G. Continental version.
The earliest trace of this puzzle is the patent granted to Aleksandr Ordynets. It is unlikely that this patent was the basis for this variant but nothing else is known about its origin.
Original price: 9.90 Deutsche Mark (taken from a german games catalogue from 1984; under the name "Doppelpyramide")
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Thank you to the following people for their assistance in helping collect the information on this page: Geert Hellings.
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