Aluminum King puzzle, designed by Marcel Gillen, Bits and Pieces #07-7869. No Box. Photocopy of instruction sheet included. Mechanism works fine. Weighs 13.4 oz.

Change puzzle, design by Yamamoto Hiroshi, you take the pieces in the tray (each made of black and white components) and arrange them so as to make the various pictures shown in the instructions. Harder than I expected. Weighs 8.5 oz.

Rubik's UFO, not the easiest twisty-puzzle to find. New in package. Weighs 7.2 oz. Think it was made around 2005, though I can find no date on the box.

I have no idea who made this, or what the object is. It's a flopping collection of polyhedrons that fold to make a variety of shapes, including the cube. Not too difficult to make it all purple on the outside, if that's the object. Weighs 4.2 oz

Star Xi Puzzle, designed by Yoshiyuki Kotani, laser cut by LLC. Object; put the five pieces together in a star shape. Weighs 6.1 oz

Make an Elephant Puzzle; overlay 7 clear disks with animal silhouettes until you get the image of an elephant. If you're familiar with this sort of puzzle, this is the same idea. From Cryptic Classics in Australia, 1993. Design by Dugald Keith. Imported to the US by Binary Arts. Weighs 2.4 oz.

This was Joe Becker's exchange at IPP19, made by Interlocking Puzzles

This is a 5x5x5 cube with a hole through the middle. Made by Steve Strickland.More details from the designer - Watson's wormhole

A three piece burr that has 2 mazes inside it. This puzzle is not numbered as it was one of the designers copies.See Minotaur's Burr for the original listing on Mr Puzzles Site.

Three of the Cast Puzzle series. Cast Square, Cast Cylinder, Cast Donut, from Hanayama. These have all been unpacked, solved, and repacked, so they aren't "new".

This is a simple 3D carved jigsaw of a lighthouse scene (9 pieces) with a 4 piece frame and a backing board. The back has a slotted panel that comes out that allows you to lean it on a desk like a photo. It's pretty, and nicely made, but certainly not difficult.

Yeah, everyone needs a few of these in their collection. Philosopher's Knot; not sure about the manufacturer, might be Futuristix. About 20-30 years old. No box, no instructions, take it apart and put it back together.

An IPP31 Exchange puzzle from A. Kalinin.It is easy to pack the 4 duckings in the top lake. Not so easy in the bottom lake!I wanted to give others the opportunity to try this fun puzzle.

Beautifully crafted by Scott Peterson from English Walnut and Peroba Rosa and almost impossible to assemble without the jig, which is African Blackwood. This is Stewart Coffin's design #39 and #39a and is in perfect condition.

Open the box. Not very difficult but a lot of fun to work through the mazes. The interior of the box is unobstructed, so you could actually store something in this puzzle box.This box came within an inch of being destroyed in the great Colorado flood of 2013!

Fit the extra triangle into the seemingly full tray.

Designed by Marcus Gotz and fashioned beautifully by Eric Fuller from woods which include walnut, sapele, yellowheart, wenge, maple, bloodwood, padauk, rosewood, holly and purpleheart with a cherry stand, this is a sliding tile puzzle with an extra dimension.

From an unknown craftsman this is a 6 piece burr in solid oak.It's made from rods 1 cm square and some 8 centimetres long.Not the hardest 6 piece burr but a nice puzzle.Ships worldwide from The Netherlands.Buyer pays shipping and fees.

Including directions this is a Pyrix puzzle!Send to you in a clear box, since the original box is gone.for more info have a look here: http://www.jaapsch.net/puzzles/pyrix.htmShips worldwide from The Netherlands.Buyer pays shipping and fees.

From Belgium these are two boxes with the red and green geometrics.The series consists of, I believe, 6 versions in total.Each box contains five tangram like puzzles to be put together.Ships worldwide from The Netherlands.Buyer pays shipping and fees.