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One of the tiles is embossed with a price.
This was a natural shape modification of the Russian Pyraminx. There's a very similar modification produced in Riga with slightly different outer shape called "Kristall" (Crystal). See the separate entry in the museum.
Like the Russian Pyraminx this puzzle was produced by several factories around USSR.
The original price is based on the official exchange rate (0.6 rubels per dollar) although in socialist time this was completely theoretical. The price (in rubels) is visible on the single embossed tile.
If you're looking to buy, eBay is the one place you can find almost anything... if you're willing to wait for it, then pay the price!
Thank you to the following people for their assistance in helping collect the information on this page: Carter, Aleksey Baulin.
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