This limited edition puzzle box was crafted in January 2017 and is described by Hiroshi Iwahara as "the only design that has a dummy movement among this series. The Dummy was made unavoidably due to structural reasons, but, it plays a big role later. This design may have the second highest number of steps. The total number of steps is 25, and extracted number of side movements is 10. This is a kind of “Turning Type” and takes 3 turns to solve." Measures approximately 3.23 x 3.23 x 3.23 inches (82 x 82 x 82 mm) Materials used are Magnolia, Senn (Castor Aralia) and metal pin Will arrive with opening diagram and gift box!