Boxed LUV Puzzle (Four Blocks in a Box STC#189) (IPP23) by Stewart T. Coffin / Walt Hoppe
Only four pieces, this Coffin design features a lid closure constraint.
Exchanged at IPP 23 held in Chicago, USA in 2003.
Puzzles are made to live in people's hands. Pick one up today! See all active listings here: metagrobology : the study of puzzles
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