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A puzzle from the soviet union with intersecting plungers made in the eighties.
"Ramka" is a russian word and means "frame".
It was described in the book V.N. Dubrovskiy, A.T.Kalinin "Mathematical puzzles", Moscow, "Znanie", 1990, 69-74 pp.
"... this puzzle was produced several years ago. Ramka was suggetsted
by Erenburg family from Moscow."
The year (1988) mentioned here is not verified but according to the description the upper bound.
The original price is based on the official exchange rate (0.6 roubles per dollar) although in socialist time this was completely theoretical. The price (in roubles) is visible on the puzzle's back.
There are at least two differently coloured versions.
Thank you to the following people for their assistance in helping collect the information on this page: Andreas Nortmann.
This puzzle can be found in collections of these members:
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