The object of this puzzle is to remove the trapped coin. It's very difficult. Similar to but not the same as the "Remove the Yolk" puzzle.

the goal is to pack the 5 baby ducks flat into the two tray spaces... I'm selling these puzzles because I no longer have space to store or display them :(buyer is responsible for money transfer fees (ie 3.5% for paypal), packing and shipping expenses...

This is a set of 3 Bent Board Burrs designs by Frans de Vreugd produced for IPP23.They are Bent Board Burrs #1, a unique level 22 puzzle#2, a unique level 16-5 puzzle, and #6 a unique level 8-1 puzzle.I'm selling these puzzles because I no longer have space to store or display them :(buyer is responsible for money transfer fees (ie 3.5% for paypal), packing and shipping expenses...

from puzzlepalace.com:This puzzle explores polyominoes on a pentagon/hexagon grid. There are nine ways three right pentagons can be properly put together. A right pentagon has all sides equal save one and two 90 degree angles. This puzzle has all nine pieces plus all the ways a hexagon can be added.It is made of florescent acrylic and black acrylic.The puzzle's predecessor was designed my me and called "Snowflake". I later found out that a much more famous puzzle, by Stuart Coffi...

This is a small but very difficult puzzle box

A small but interesting puzzle box

From the official Cubic Dissection description: All four gears turn simultaneously around their off centered axis, contained by the rotating connector rods. I saw a picture of this toy online and knew I had to make one. It turned out to be absurdly fun and addicting to play with, so I made a small batch to share with my puzzle friends. While not technically a puzzle, if you need something to occupy your hands while your mind chews on a problem, this is your best friend. Precision cut and h...

from cubicdissection.com:Tease is the first of several Cornwell puzzles I will be releasing this year. Sam uses tricky dimensions in many of his designs, by dividing the larger pieces into a much smaller common denominator. Instead of using the advantage of a smaller unit count to up the number of moves astronomically, he shows tasteful British restraint, and zings the solver with a surprising twist. Tease is moderate in difficulty, yet fun to solve and displays very well. Five...

This is a great packing puzzle designed by Ronald Kint-Bruynseels, and crafted by Eric Fuller.4" box made from Walnut with 10 Jatoba pieces. Signed and dated 12.08, 37 copies made.

A 9-piece serially interlocking cube made by Michael Toulouzas...I'm selling these puzzles because I no longer have space to store or display them :(buyer is responsible for money transfer fees (ie 3.5% for paypal), packing and shipping expenses...

30 sticks assemble to make a regular dodecahedron.I'm selling these puzzles because I no longer have space to store or display them :(buyer is responsible for money transfer fees (ie 3.5% for paypal), packing and shipping expenses...

Karakuri Christmas Puzzle from 2007 by Shiro TajimaI'm selling these puzzles because I no longer have space to store or display them :(buyer is responsible for money transfer fees (ie 3.5% for paypal), packing and shipping expenses...

One of Stewart Coffin's best tray puzzles...It was used as an exchange puzzle for IPP27I'm selling these puzzles because I no longer have space to store or display them :(buyer is responsible for money transfer fees (ie 3.5% for paypal), packing and shipping expenses...

very nice 3-piece burr... level 8-4I'm selling these puzzles because I no longer have space to store or display them :(buyer is responsible for money transfer fees (ie 3.5% for paypal), packing and shipping expenses...

Jim Gooch's variation of the 3-piece burr. Entry in IPP22's design competitionI'm selling these puzzles because I no longer have space to store or display them :(buyer is responsible for money transfer fees (ie 3.5% for paypal), packing and shipping expenses...

This is a traditional Japanese-style puzzle box by Yoshiyuki Ninomiya. It was his 2010 Karakuri Creation Group Christmas present.

This is Akio Kamei's 2006 Karakuri Creation Group Christmas present. Difficult to solve.

An intricate and difficult trick lock by modern master Rainer Popp

This is Heartwood Creation's most difficult puzzle box. While this box has recently become available again, the new box does not have the same appearance.

From the official Cubic Dissection description: A participant of the 2010 IPP Design Competition, this devilish take apart puzzle is not for the faint hearted. It's extremely difficult to open, and even more difficult to fully understand. The mechanism is simple enough, but figuring out the exact principle is difficult. The goal is to simply open the egg and remove the "yolk" (in this case a US quarter coin). Individually manufactured by Robrecht in the EU, this puzzle is fairly heavy and ...