Haubrich Puzzle Auction

  


Haubrich Puzzle Auctions


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How Corona affected parcel transportation, especially to the US (September 22)

 
Auction 35: October 2020
 
 Checkerboard
history
 
 
 Covering surfaces
with pentominoes
 
 
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Matching Puzzles

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 Catalog of some 
Bolt and Nut
Puzzles