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Updated Aug 18, 2024
Values for auctions have been converted to USD using conversion rates from the actual date of the auction.
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an auction to a puzzle.
“Pentaparadox” (Exchange Puzzle IPP 28)
Sep 17
2023
$15.00
1 bids
Pentaparadox by Vladimir Krasnoukhov, IPP28
Oct 07
2022
$52.00
9 bids
PENTAPARADOX, IPP28 (2008) exchange puzzle by Vladimir Krasnoukhov
Sep 18
2022
$66.00
11 bids
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