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Updated Nov 26, 2025
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.
Cogas - Garret Mathias
Aug 18
2025
$44.00
7 bids
Cogas by Garrett Mathias
Dec 16
2023
$130.00
1 bids
The Maths Box by Doug Menzies
Jul 01
2023
$977.00
4 bids
Addition and Math by Klaas Jan Damstra
Jun 19
2022
$114.00
10 bids
OurGlass - Mojo Manufacturing (Garret Mathias)
Jun 18
2022
$42.00
7 bids
MathMaker - Philos
Feb 09
2016
$40.00
1 bids
Mathesis Puzzle Box - Geoff Brown
Oct 18
2015
$111.00
31 bids
The Mathematics of Games
May 24
2011
$17.00
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