Goh's Binary Key II is a re-design of his original Key Puzzle (which was also Bill Cutler's IPP24 Exchange Puzzle).The Binary Key II comes under the group of gray-code or N-ary puzzles as they are called.Not overly difficult but sufficiently challenging to solve and nice satisfaction when you reach the end and remove the slider.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...

Havana Box # 1 made by Eric Fuller. This box has a brilliant locking mechanism and in very good condition. The wood quality is excellent and this puzzle is very rare to find one today.

One of several Indian Puzzle locks I am selling.  The manufacture of all is best described as rustic.  Some of these locks shows signs of rusting but all are complete and workable. See pictures for condition.  Not much I can say about the mechanisms without giving away the puzzles but all are relatively simple.  Postage will be at cost.Puzzle #8 weighs 91g and has a fairly simple trick. The mechanism is a little loose and is therefore easily discovered,

One of several Indian Puzzle locks I am selling.  The manufacture of all is best described as rustic.  Some of these locks shows signs of rusting but all are complete and workable. See pictures for condition.  Not much I can say about the mechanisms without giving away the puzzles but all are relatively simple.  Postage will be at cost.Puzzle 10 weighs 200g and has a fairly simple trick.

One of Pelikan's best!  Read Terry's comment at https://www.pelikanpuzzles.eu/detail/scotsman-2/

Remove The Yolk was Robrecht's design competition entry at IPP30 in Osaka in 2010.  As Master Puzzle Maker Eric Fuller has remarked - "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...

I believe this was a prototype made by Gregory prior to it being manufactured for general release. As such, this is slightly larger than those made by Maurice Vigouroux.

Eric's description: This simple cube is easy to solve, but I found the design interesting. Three different pieces use coordinate motion, sliding together neatly. Zebrawood was used for it's similarity between end and sidegrain...just looks nicer overall.Only 12 copies made for sale. Each signed and dated.

Designed and made by Brian Young, this puzzle is no longer produced.  View his original listing at https://www.mrpuzzle.com.au/gold-coast-parking-meter-puzzle.html

The puzzle is from the Enigma Series and I acquired it from Mr Puzzle Australia The object of the puzzle is to remove a small cannonball (aka ball bearing) hidden within the barrel of the  cannonWinning bidder will be invoiced the total of the winning bid amount + shipping cost (includes tracking number) to be calculated after the end of the auction + 3.5% paypal charge.

Still in original packaging

One of several Indian Puzzle locks I am selling.  The manufacture of all is best described as rustic.  Some of these locks shows signs of rusting but all are complete and workable. See pictures for condition.  Not much I can say about the mechanisms without giving away the puzzles but all are relatively simple.  Postage will be at cost.Puzzle 12 weighs 82g and has a very simple trick but an unusual shape.

Dave Rossetti's IPP20 (Tokyo) Exchange PuzzleDesigned and predominantly made by Frank Chambers (Parts of the locking mechanism were made by Walt & Chris Hoppe)Puzzle 1: Open the box. The name contains a clue. No tools,no magnets, no rapping, and the black button does not move.Puzzle 2: Once open, you will find another puzzle involving toothpicks)I've tested the mechanism and it is working, the box contents are original and complete.

One of several Indian Puzzle locks I am selling.  The manufacture of all is best described as rustic.  Some of these locks shows signs of rusting but all are complete and workable. See pictures for condition.  Not much I can say about the mechanisms without giving away the puzzles but all are relatively simple.  Postage will be at cost.Puzzle #1 weighs 164g and has a fairly simple standard trick.

One of several Indian Puzzle locks I am selling.  The manufacture of all is best described as rustic.  Some of these locks shows signs of rusting but all are complete and workable. See pictures for condition.  Not much I can say about the mechanisms without giving away the puzzles but all are relatively simple.  Postage will be at cost.Puzzle #2 weighs 501g and has a fairly simple standard trick.

One of several Indian Puzzle locks I am selling.  The manufacture of all is best described as rustic.  Some of these locks shows signs of rusting but all are complete and workable. See pictures for condition.  Not much I can say about the mechanisms without giving away the puzzles but all are relatively simple.  Postage will be at cost.Puzzle #3 weighs 312g and has a fairly simple standard trick.

One of several Indian Puzzle locks I am selling.  The manufacture of all is best described as rustic.  Some of these locks shows signs of rusting but all are complete and workable. See pictures for condition.  Not much I can say about the mechanisms without giving away the puzzles but all are relatively simple.  Postage will be at cost.Puzzle #4 weighs 435g and has a very simple standard trick.

One of several Indian Puzzle locks I am selling.  The manufacture of all is best described as rustic.  Some of these locks shows signs of rusting but all are complete and workable. See pictures for condition.  Not much I can say about the mechanisms without giving away the puzzles but all are relatively simple.  Postage will be at cost.Puzzle #5 weighs 622g and has a very simple standard trick.

One of several Indian Puzzle locks I am selling.  The manufacture of all is best described as rustic.  Some of these locks shows signs of rusting but all are complete and workable. See pictures for condition.  Not much I can say about the mechanisms without giving away the puzzles but all are relatively simple.  Postage will be at cost.Puzzle 11 weighs a gargantuan 1.75kg including three keys (about 3.8lbs). This one is heavy with no key holes and a relatively simple multiple step solution.

One of several Indian Puzzle locks I am selling.  The manufacture of all is best described as rustic.  Some of these locks shows signs of rusting but all are complete and workable. See pictures for condition.  Not much I can say about the mechanisms without giving away the puzzles but all are relatively simple.  Postage will be at cost.Puzzle 13 weighs a hefty 1264g including the three keys. It has a multistep solution. Unfortunately the first step is too loose and easily discovered, but the...