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 The Grand Piano Japanese Puzzle box was designed by Hiroshi Yamamoto and produced by Yoko Kakuda. Comprised of Walnut Shiuri Cherry, Maple and Wenge.woods, this box is quite large and measures 7.08 x 5.63 x 3.35 inches. Opening in only a few steps, this box is quite ingenious and an amazing piece! Contains two small hidden compartments. Entered in the Karakuri Idea Contest, this box is being released from a private collection and was crafted with only a small number offered for sale.