Four-Piece Pyramid by Stewart Coffin (STC #26). One of 30 made in 1979 of 1-inch cherry rhombic dodecadedrom bocks instead of edge-beveled cubes. From the collection of Dr. Benjamin Muckenhoupt.Coffin wrote in AP-ART: "

Here's the original Cubic Dissection page for this puzzle: https://cubicdissection.com/products/b-box-reactorSliding panels leading to a level 135 solution, and another puzzle (Reactor) inside. Originally made in 2016. Original design by Eric Fuller and Goh Pit Khiam, made by Eric.Shipping weight is 1 lb 5 oz with packaging. Contact me after the auction for your total.

The Antikythera tablets are a series of mechanical puzzles, in tablet form, stored inside a wooden puzzle box. The box forms an integral part of the puzzle with the first puzzle needing to be solved to even open the box. Inside are five wooden tablets giving story and clues towards the mechanism origins, once solved all the tablets combine to produce a single, definitive answer revealing a hitherto unknown piece of information for a Greek astrologer.Please wait for final invoice with...

Spheres is a unique packing puzzle where the goal is to get all the L pieces in with the 3 spheres.It is inanely difficult.Please wait for final invoice before submitting payment.No additonal fees associated.

Eighteen-piece "Parcel Post" puzzle by Bill Cutler. From the collection of Dr. Benjamin Muckenhoupt, who purchased many prototypes and originals from Cutler. Top copy reads (as best I can tell):PARCEL POST PUZZLE (Trade Mark)Can you pack the basket?Uncle (Sal's?) (date?) is waiting for one more basket of packages before starting to deliver the Parcel Post mail. There is room for only a small basket which the cover  of the box represents. All the packages (or blocks) must be taken from the big...

Blind Labyrint 1A Maze Puzzle. Solved once. In original packaging.Buyer will pay shipping and will be calculated at the end of the auction. Shipping will be the amount the shipping service (USPS, UPS, Fedex) charges. I do not add any fees to the shipping. I can combine shipping for multiple auctions one.I do not add PayPal fees or any other fees. You will pay the bid price plus shipping. Nothing more.

Seven-piece Tetralott, designed by Markus Götz. Tetralott was Markus Götz's entry in the 2002 IPP Contest.The English description on the instructions (included) reads:Tetralott is a real challenge for all players used to shot pyramids. All 10 shots of the tetrahedron pyramid have been divided into calottes. With these 20 calottes 7 differnt pieces of the puzzle have been created. All 7 pieces are used for building a complete pyramid.It is not possible to guess the special position of a piece...

 Stewart Coffin's "Three Pairs," STC design #27. Coffin wrote, "AP-ART: The Sculptural Art That Comes Apart, p.18.

Diagonal Cube, designed and built by Stewart Coffin for Dr. Benjamin Muckenhoupt. Coffin design #58, "Six pieces in 2 contrasting woods assemble diagonally to form an attractive cube. About 20 made in fancy woods, 1981-1985." (AP-ART: The Sculptural Art That Comes Apart, p.26.)Winning bidder will be invoiced for the total of the winning bid plus 4% handling and separate shipping fee after the auction closes. 

The goal of the Half H puzzle is to use all seven pieces to make the shape of an uppercase letter H. It seems simple, right? The solution is anything but, and requires an intuitive leap. This is one of Eric's favorite puzzles; it's very clever.

A very nice 6 pieces coordinated motion from Vinco.The fit can be considered as a little bit loosy but the sliding of the coordinated motion is just so smoothy that you want to play with ever and ever.This puzzle is a pure design. There is only the functionnal part required, but those simple things make a so nice shape.Plum is so beautifull on this puzzle.Winner pays shipping cost packagingShipping price is just an estimation (and already include packaging), it will be recalculate exactly.Before...

Puzzlewood description :"a 5 piece packing problem with a frame; 4 sheeps the sheepyard should be brought under the roof; it was used as an exchange puzzle for the IPP 31 in Berlin"I will send the puzzle disassembled because it's really more fun like that.The tricky solution is doable, friends are happy to play with.Winner pays shipping cost plus packagingShipping price is just an estimation (include packaging), it will be recalculate exactly.Before payement, message me at the end of the a...

Six piece Burr Circus by Stewart Coffin (STC #116) from the collection of Dr. Benjamin Muckenhoupt.  Dr. Muckenhoupt received many early prototypes from Coffin; this puzzle may have been one of the six made by Coffin in 1995. Cubic Dissection comments, "Tricky and a lot of fun to solve."Winning bidder will be invoiced for the total of the winning bid plus 4% handling plus shipping fee after the auction closes. 

A So Cooool Puzzle !Description from cubicdissection :"Pit sent me this design and I really liked it. It's a tricky packing puzzle that uses a new type of motion. With five identical pieces (but different wood types) and an acrylic cover, it's a lot of fun to play with and figure out. Moderately difficult, you can feel comfortable handing this off to a non-puzzling friend. Fit is very good, should not have any issues with humidity changes. 44 made for sale, each signed and dated. S...

Six-piece "Pin-Hole" puzzle by Stewart Coffin (STC design #20). 50 sets were made by Coffin in 1978-1979. From the collection of Dr. Benjamin Muckenhoupt, an avid puzzle collector who corresponded with Coffin. Winning bidder will be invoiced for the total of the winning bid plus 4% handling fee  plus shipping fee after the auction closes. 

The goal is to balance the wooden die on the flat corner. This is possible by putting the internal ball correctly. This is a very difficult puzzle.Winner pays shipping cost plus packagingShipping price is just an estimation (include packaging), it will be recalculate exactly.Before payement, message me at the end of the auction to calculate total exact price.For multiple items, combined shipping is available.

A so good puzzle.Andreas Röver is a reference concerning coordinated motion, and here this is a very good example.His own description :"My exchange puzzle for the IPP 28 in Prag. As far as I know this is the worlds first multi-level coordinated motion puzzle. The puzzle requires 4 moves to disassemble and all of them are coordinated motion moves [...] I brought 113 to the IPP some were made of Walnut some were Rosewood as on the picture. All of them are for the exchange. ...

Wink Magic by Jerry Andrus. Used, minor flaws A book of cardboard cutouts to make optical illusions. 1994 Japan. Hardback. Dust jacket. IN JAPANESE LANGUAGE. 40 pages. The first 16 pages have instructions and diagrams on how to assemble the cardboard models. The second half of the book has the cardboard models. You will get a lot of fun out of this book. The cutouts are easy to assemble. Why this neat book was not made available in the U.S., I'll never know. REMEMBER, THE BOOK IS IN JAPAN...

Nice little intricate join puzzle.The solving is easy and very classic but the join is cleverly designed.This is a reproduction made by Pelikan of an old puzzle “The Wunder Puzzle ges.geschützt” designed in Germany around 1920After the end of the auction the final shipping cost will be calculated.SEPA bank transfer is accepted (EU countries) and free. TransferWise payment solution is also an option.

Exchange puzzle by William Strijbos at IPP 32 (Washington D.C. 2012)Main challenge : Take the ball outFun and tricky puzzle :-)Nice review here : http://allardspuzzlingtimes.blogspot.com/2012/09/wil-strijbos-exchange-puzzle.htmlAfter the end of the auction the final shipping cost will be calculated.SEPA bank transfer is accepted (EU countries) and free. TransferWise payment solution is also an option.