6 sun 18 steps Yosegi/Ichimatsu Limited Japanese puzzle box Himitsu-bako Japan

*The traditional yosegi pattern is different on each box, so it may not look exactly the same as in the photo. The traditional yosegi is used only on the top panel. The bottom panel is made with either sliced walnut wood or makore wood (you cannot choose which one). The side panels are made with checkered yosegi. Opening method of the puzzle box : 18 steps Moving panels and Slide keys : have 4 panels / 2 keys Outside size : 7.0 x 4.5 x 2.9 inch (18 x 11 x 7.5 cm) = 6 sun Inside storage space size : about 5.0 x 3.7 x 1.9 inch (12.7 x 9.6 x 5 cm) Include Description (solution sheet of how to open) and the gift box 6 sun size Japanese puzzle box. 6 sun (18cm / 7inch) is a Japanese measurements. 1 sun is about 1.18 inch / 3.0 cm. This puzzle box is opened by 18 steps. This puzzle box have 2 slide keys and 4 slide panels. The Japanese puzzle box is made from only wood. This design puzzle box is made only by Hiroyuki Oka. All the internal gimmicks are made of wood, so the warmth of wood. The simple and gentle movement of the mechanism gives healing and comfort. The surface of the puzzle box is painted with a safe transparent paint.