The Pennyhedron puzzle was designed by Stewart Coffin, with some help and inspiration from his children. As the story goes, his kids used to glue puzzle blocks together in his shop – which inspired him in the direction of the Pennyhedron. This is a clever puzzle with only 2 pieces, which he and his children used to sell with a penny inside – hence the name.Incidentally, this is the very first puzzle design I ever I made, and the one which got me hooked on making puzzles! I became intrigued w...

This is an early production Signature quality version (superior as always).  Except for being slightly smaller at 2.7 inches, it is the same as the original 2.9 inch Signature version.  It is signed by Eric Fuller and has only been solved a few times.Buyer pays PayPal fees

"The 2n Cube #1 cube was designed by Rob Stegmann in 2003. The puzzle consists of 8 interlocking pieces which assemble neatly into a 4x4x4 cube. Each of the pieces is comprised of 2 n-tetrominoes, joined together in 4 different ways (4 pairs of differently shaped pieces). Thus, 2 of each piece comprised of 2 n-tetrominoes, and Mr Stegmann's last name also has 2 n so the puzzle name is quite fitting! The puzzle is considered to be of moderate difficulty. In addition, through some experimenting ...

High quality Pelikan craftsmanship (as always).  Once completed sides spell "P O P P", in recognition of Rainer PoppBuyer pays PayPal fees

Goal is two-fold.  First pack in all the pieces excluding the single cube, then pack in all the pieces including the single cube (very clever).  This is the larger of two versions.Buyer pays PayPal fees

this unusual 6-piece burr is a level 8.2.2 design by Juno.It was an exchange puzzle at IPP29 in San Francisco

this unusual 6-piece burr is a level 7.4.2design by Juno.It was an exchange puzzle at IPP28 in Prague

this is another nice 6 piece burr variation.Exchanged by Grant Smith at IPP29 in San Francisco.I can't locate details on its difficulty

6 piece notchable burr with plates added to the ends of the pieces.Makes a level 5.4 burr.Photo courtesy of N.Baxter.buyer pays paypal fees

A version of the award winning puzzle. This one has cubes 1, 2, and 3 included.Buyer pays paypal fees

This 2 piece burr puzzle is the only one I know of that is fully interlocking. One end also has a skull embossed in it, which provides a near optical illusion.

Assemble a stable cube on the perch. Cube inside box is a standard 3 x 3 x 3 cube made in light wood.Ipp29 exchange

The Swiss Cube #2 was part of a series of puzzles designed by Jürg von Känel. Object is to remove the white Swiss cross pieces and then put them back in. Only 40 copies of the Swiss Cube #2 were made making each a rare collector's puzzleImportant: Don’t try to take the red cube apart.Winning bidder will be invoiced the total of the winning bid amount + shipping cost (includes tracking) to be calculated after the end of the auction + 3.5% paypal charge

brass dice puzzle marked (C) 198 Rocky Chiaro.Buyer pays paypal fees

from cubicdissection.com:This attractive piece of art is also a dang tricky puzzle. Four sticks interact with a straightforward cage in vary non-straightforward ways. The unique level 24.6.3 solution means what it says - this puzzle's not joking around.Figuring out which piece goes where is only the beginning, since some of them switch around during assembly. Order at your own peril - I'm shipping this assembled in the spirit of friendship - craftsman is not liable for any lost sleep!Constructio...

A very unusual 9 piece burr from Gregory Benedetti.a reasonable level 9.13...... s

A 6 piece burr with an unusual first move.My exchange from IPP 28. One of the last ones I have :)Buyer pays paypal fees.

Remove the ball from the puzzleVinco's exchange form IPP 28.Buyer pay paypal fees

Take the 6 pieces apart and reassemble them.IPP26 exchangeBuyer pays paypal fees

Put all 4 pieces inside the frame. a unique level 8 solution.Ipp 28 exchange.Buyer pays paypal fees