Search tips: Space will search X or Y, "+" will search X and Y, "-" will exclude that term from search.
            27.94%  of auctions linked
        
        
            Search tips
            
  
    
  
        
    
    
     Using a space will search X or Y.
"+" will search X and Y.
"-" will exclude that term from search.
            27.94% 
            linked
        "+" will search X and Y.
"-" will exclude that term from search.
            Updated Nov 01, 2025
            
  
    
  
    
    
    
     Values for auctions have been converted to USD using conversion rates from the actual date of the auction.
  
        | Puzzle 
                    
  
    
   
    
    
     Click the  to link 
                an auction to a puzzle.  | 
                |||||
|---|---|---|---|---|---|
| 
                        
  
    
   
    
    
     Click the  to link 
                    an auction to a puzzle.  | 
                |||||
| MBP #9 Six Key Mine by Robert Rose | 2025-May-25 | $375.00 | 1 | 
                        
  
    
   | 
                    |
| 
                         MBP #9 Six Key Mine by Robert Rose 
                        
                     | 
                    May 25 2025  | 
                    
                         $375.00 
                        1 bids 
                     | 
                    |||
| Six Key Mine - Einstein | 2024-Dec-11 | $99.00 | 1 | 
                        
  
    
   | 
                    Six Key Mine | 
| 
                         Six Key Mine - Einstein 
                        
                     | 
                    Dec 11 2024  | 
                    
                         $99.00 
                        1 bids 
                     | 
                    puzz | ||
| Einstein! Six Key Mine | 2024-Oct-03 | $267.00 | 26 | 
                        
  
    
   | 
                    Six Key Mine | 
| 
                         Einstein! Six Key Mine 
                        
                     | 
                    Oct 03 2024  | 
                    
                         $267.00 
                        26 bids 
                     | 
                    puzz | ||
| Six Key Mine IPP Winner | 2024-Jan-28 | $118.00 | 0 | 
                        
  
    
   | 
                    Six Key Mine | 
| 
                         Six Key Mine IPP Winner 
                        
                     | 
                    Jan 28 2024  | 
                    
                         $118.00 
                        0 bids 
                     | 
                    puzz | ||
| Six Key Mine | 2023-Apr-11 | $140.00 | 1 | 
                        
  
    
   | 
                    Six Key Mine | 
| 
                         Six Key Mine 
                        
                     | 
                    Apr 11 2023  | 
                    
                         $140.00 
                        1 bids 
                     | 
                    puzz | ||
| SIX Key Mine / Einstein by Robert Rose (Bits and Pieces Edition) | 2023-Jan-12 | $121.11 | 4 | 
                        
  
    
   | 
                    Six Key Mine | 
| 
                         SIX Key Mine / Einstein by Robert Rose (Bits and Pieces Edition) 
                        
                     | 
                    Jan 12 2023  | 
                    
                         $121.11 
                        4 bids 
                     | 
                    puzz | ||
| Six Key Mine | 2022-Aug-21 | $110.00 | 0 | 
                        
  
    
   | 
                    Six Key Mine | 
| 
                         Six Key Mine 
                        
                     | 
                    Aug 21 2022  | 
                    
                         $110.00 
                        0 bids 
                     | 
                    puzz | ||
| Six Key Mine | 2022-Jun-18 | $137.00 | 4 | 
                        
  
    
   | 
                    Six Key Mine | 
| 
                         Six Key Mine 
                        
                     | 
                    Jun 18 2022  | 
                    
                         $137.00 
                        4 bids 
                     | 
                    puzz | ||
| Six Key Mine | 2022-Feb-20 | $190.00 | 7 | 
                        
  
    
   | 
                    Six Key Mine | 
| 
                         Six Key Mine 
                        
                     | 
                    Feb 20 2022  | 
                    
                         $190.00 
                        7 bids 
                     | 
                    puzz | ||
| Six Key Mine #7 | 2022-Feb-18 | $341.00 | 5 | 
                        
  
    
   | 
                    Six Key Mine | 
| 
                         Six Key Mine #7 
                        
                     | 
                    Feb 18 2022  | 
                    
                         $341.00 
                        5 bids 
                     | 
                    puzz | ||
| Six Key Mine MBP #9 | 2021-Nov-26 | $221.00 | 11 | 
                        
  
    
   | 
                    Six Key Mine | 
| 
                         Six Key Mine MBP #9 
                        
                     | 
                    Nov 26 2021  | 
                    
                         $221.00 
                        11 bids 
                     | 
                    puzz | ||
| Six Key Mine | 2021-Feb-14 | $145.00 | 15 | 
                        
  
    
   | 
                    Six Key Mine | 
| 
                         Six Key Mine 
                        
                     | 
                    Feb 14 2021  | 
                    
                         $145.00 
                        15 bids 
                     | 
                    puzz | ||
| Six Key Mine (R D Rose) | 2020-Dec-19 | $202.84 | 1 | 
                        
  
    
   | 
                    Six Key Mine | 
| 
                         Six Key Mine (R D Rose) 
                        
                     | 
                    Dec 19 2020  | 
                    
                         $202.84 
                        1 bids 
                     | 
                    puzz | ||
| Six Key Mine (#07-6725) | 2018-Jun-01 | $240.88 | 1 | 
                        
  
    
   | 
                    Six Key Mine | 
| 
                         Six Key Mine (#07-6725) 
                        
                     | 
                    Jun 01 2018  | 
                    
                         $240.88 
                        1 bids 
                     | 
                    puzz | ||
| Six Key Mine Puzzle | 2017-Jun-11 | $200.00 | 14 | 
                        
  
    
   | 
                    Six Key Mine | 
| 
                         Six Key Mine Puzzle 
                        
                     | 
                    Jun 11 2017  | 
                    
                         $200.00 
                        14 bids 
                     | 
                    puzz | ||
| Six Key Mine | 2016-Oct-09 | $121.00 | 11 | 
                        
  
    
   | 
                    Six Key Mine | 
| 
                         Six Key Mine 
                        
                     | 
                    Oct 09 2016  | 
                    
                         $121.00 
                        11 bids 
                     | 
                    puzz | ||
| Six Key Mine | 2015-Oct-06 | $233.00 | 
                        
  
    
   | 
                    Six Key Mine | |
| 
                         Six Key Mine 
                        
                     | 
                    Oct 06 2015  | 
                    
                         $233.00 
                         bids 
                     | 
                    puzz | ||
| Six Key Mine (#9) | 2015-May-01 | $487.85 | 1 | 
                        
  
    
   | 
                    Six Key Mine | 
| 
                         Six Key Mine (#9) 
                        
                     | 
                    May 01 2015  | 
                    
                         $487.85 
                        1 bids 
                     | 
                    puzz | ||
| Einstein puzzle (Six Key Mine reproduction) | 2010-Feb-13 | $11.00 | 5 | 
                        
  
    
   | 
                    Six Key Mine | 
| 
                         Einstein puzzle (Six Key Mine reproduction) 
                        
                     | 
                    Feb 13 2010  | 
                    
                         $11.00 
                        5 bids 
                     | 
                    puzz | ||
| Six Key Mine | 2007-Oct-18 | $176.00 | 
                        
  
    
   | 
                    Six Key Mine | |
| 
                         Six Key Mine 
                        
                     | 
                    Oct 18 2007  | 
                    
                         $176.00 
                         bids 
                     | 
                    puzz | 
                   Auction: 
                   
                   
                
                Search here for a puzzle...