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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.
Click the to link
an auction to a puzzle.
Double Pyramid (Exchange Puzzle IPP 31)
Jun 18
2022
$50.00
6 bids
Double Pyramid
Jan 01
2020
$20.20
1 bids
Double Pyramid, IPP31 exchange puzzle
Aug 04
2019
$38.78
19 bids
Auction:
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