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. Stamped with Mr. Yamanaka's hanko! The LARGEST Puzzle Box Crafted. OUTSIDE Dimensions * 14.4 x 10.1 x 4.7 inches INSIDE Dimensions approximately * 12.4 x 8.9 x 3.9 inches Requires 28 Steps to open. Will arrive with opening diagrams