The Fibonacci Box is a very nice puzzle box designed and made by Jesse Born. It was a limited edition and all copies have long since sold out.It is made from Holly, Katalox, Cherry, Poplar, Brass, Padauk and Richlite.From the designers website:"The Fibonacci puzzle is based on the Fibonacci sequence found in nature. The goal of this puzzle is to open the box. I uncovered a satisfying coincidence in nature that made the basis for the main Fibonacci mechanism. When I figured out a puzzle like th...