Up for Auction is Eternity by Christopher Monckton. These webpages contain an explanation of the puzzle as well as a brief history of the solvers. Thank you to Ed Pegg Jr. from mathpuzzle.com for the information about this design. Most of the original information is no longer accessible.
https://mathpuzzle.com/eternity.html
https://en.wikipedia.org/wiki/Eternity_puzzle
Most notable is the one million pounds sterling cash prize given to the first successful solver. Each piece of this puzzle is made from joining 12-polydrafter together, twelve 30-60-90 triangles.
Note: This puzzle is still sealed from the factory and in new condition. The Shrink wrap is still intact, but has several tears. One of these is very large and will allow pieces to fall out if tipped over. The maker of this copy is unknown.
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These puzzles are extras and oddballs that have accumulated in the shop. Sometimes when we make a run of puzzles we will have a few with different woods, etc. which are too much trouble to list individually on the website. These puzzles are all in new condition and fully functional.
For multiple items, combined shipping is available. Simply message me once you are finished bidding and I will send an invoice.