Due to this Puzzle being crafted as a limited edition or run, it is no longer available for sale. Regrettably we do not think it will be back in stock. Please view our other hard to find puzzles on our Karakuri Trick Box Page Irregular Twin Box by Akio Kamei Crafted in November 2009 Measures 3.149 x 3.149 inches (80 x 80 mm) Similar mechanism to the Cubi box. You may have to concentrate a bit to get this box opened. Most collectors will require many steps to open this piece but some may open it in only one step! Constructed of Walnut Will arrive in High Quality Gift Box