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a 38-piece variation on William Altekruse's original puzzle patented in 1890, designed by Stewart Coffin and made by Interlocking Puzzles, who produced several of his designs. this one is from 2001.
Stewart described this variation in The Puzzling World of Polyhedral Dissections (Ch.6):
Once the basic principle is understood, these larger versions are not very difficult to assemble except that some trial and error may be required to figure out the correct order of assembly. They also require more dexterity of the others, and it helps if the pieces are accurately made.
...which these pieces are.
buyer has the choice of shipping assembled or disassembled.
buyer pays shipping.
shipment will be by USPS Priority Mail, insured for the full sale price.
payment via PayPal only.
♫:
all puzzles in my collection have been kept out of sunlight, in a humidity-stable room, away from pets unless they can solve them, and in a non-smoking household.
thank you for looking, and good luck if you bid.
:cameron:
