Two Pi, designed by Greg Benedetti and made by Eric Fuller. 3-piece smooth coordinate motion. Sharp edges and a  good fit. Description at Cubic Dissection; https://archive.cubicdissection.com/html/2pi.htmlShipping will be determined after the auction, so don't pay until it's added in.

Hex Trivet, design by William Waite and made by Interlocking Puzzles/Wayne Daniel. Despite its appearance, the Hex Trivet is NOT a coordinate motion puzzle, but consists of 6 interlocking pieces made up of two layers. The puzzle fits together smoothly and accurately, and the finish is quite nice. I bought this in 2004, from Puzzlemist, I think. Shipping will be determined after the auction, so don't pay until it's added in.

PInk Cube Maze 5x5x5, 2 balls, enclosed. Unknown maker and designer. This puzzle is a little unusual in that it appears the player needs to position the two balls to two different goals simultaneously (the goals are a star and a circle on opposite sides of one wall). So, it's tricky. Some light surface scratches. Postage to be calculated after the auction. 

Fireplug variant, designed by Marcel Gillen, mfg by Bits & Pieces #07-7389, sold in their catalog as "Play With Fire". I bought this copy directly from Marcel back in 2010. He pointed out to me that the B&P version had a defect in it that allowed it to permanently bind up inside, becoming unsolvable. He bought a bunch of the Fireplugs from B&P and fixed the problem inside the puzzle, which is why I refer to it as a "variant". I did solve it, but that was 15 years ago. It could use a good polishi...

"Bare Bones" is a 3d wire-frame plastic maze in a clear plastic cube, with one captive white ball which is supposed to go from one circle to the other, as shown in the photos. Designed by Steve Winter, printed by Shapeways before it went bankrupt.  I believe I bought this in 2016. Cool little maze.Postage to be calculated after the auction. 

Three small maze cubes, wire frame, one ball in each. Designed by Steve Winter, printed by Shapeways before it went bankrupt. The smallest, as you can see, is about the size of a quarter. These are VERY light and fragile. I believe I bought them in 2016. The color scheme was selectable, so I selected a white ball in a black frame for 2 of them, and a black ball in a white frame for the middle-sized maze.The 5x5x5 is called Zig-Zag-ZugThe white 6x6x6 is called Floating LabyrinthThe 7x7x7 is calle...

Roc-Key puzzle by Rocky Chiaro, B&P 07-7807. No box or solution sheet. Interesting solution, but not too difficult. Nice condition.Postage to be calculated after auction. Please do not pay until postage has been added.

"It's a Hardly" - Brass puzzle, 8 pieces, looks like a Harley engine, made by Rocky Chiaro. You can see his signature stamped into the side of the puzzle in one of the photos. Nice condition. Puzzle is about 2 inches tall. Postage to be calculated after the auction. Please don't pay until after this has been calculated.