I’m offering two Gear Corner Turning Octahedra (black plastic) produced by Calvin’s Puzzle brand: #5 and #6. The first buyer will receive #5, the second #6. The numbers started at #1 and indicate how many factory produced Gear Corner Turning Octahedra I sold.
Instead of factory printed “Timur” signature label they have my handwritten signature and the number.
If you buy one of these puzzles, together with the puzzle you’ll receive a signed Collector’s Certificate (A5 size) with you name upon it, confirming that you obtained the puzzle directly from the inventor of this puzzle (see the sample).
BIN price €31.Auction link