Logical Progression Puzzle crafted by Eric Fuller

This puzzle box is being offered for sale by a private collector. This is the Logical Progression designed by Rick Eason and crafted by Eric Fuller. It was limited to only 42 copies. Eric describes this puzzle in the following manner, " Logical Progression is a very unique cube. With only one solution which must be accomplished with serial assembly, it seems at first look that this puzzle will be a trial and error nightmare. However, the puzzle is designed such that scrutiny of the pieces will reveal their positional constraints; therefore the puzzle can be solved by analysis rather than guesswork !" Measures 3 x 3 x 3 inches and will arrive in bubble wrap. This puzzle consists of 16 pieces, crafted in Walnut and Oak. Solution is not included. *Note there are a few small dings on the puzzle. Please view the pictures carefully.