7 steps Walnut wood 5 sun Japanese puzzle box Himitsu-bako [5-7nw]

*The top and bottom panels are made from sliced Natural walnut wood. It is made from large walnut wood sheets, so there may be seams.

Opening method of the puzzle box : 7 steps
Moving panels and Slide keys : have 2 panels / 1 keys

Outside size : 5.9 x 3.9 x 2.7 inch (150 x 100 x 70 mm)
Inside storage space size : 4.44 x 3.08 x 2.08 inch (113 x 78 x 53 mm)
Include Description (solution sheet) and the gift box

5 sun size Japanese puzzle box. 5 sun is a Japanese measurements. 1 sun is about 1.18 inch / 3.0 cm.
This puzzle box is opened by 7 steps. The design is the combination of Natural walnut wood and Agathis wood. The Japanese puzzle box is made from only wood. This puzzle box is made by Hiroyuki Oka.

"The Japanese puzzle box (Himitsu-bako) is made only of wood, environmentally-friendly products. This a one of traditional art work of Japan. The origin goes back even to the Edo and Meiji era (1800s) in Japan. It has been handed down by the very few craftsmen. I am crafting full-time these puzzle boxes by myself. I had training for 10 years and I'm crafting these Japanese puzzle boxes and Yosegi-zaiku for over 20 years. All items are made in my workshop and shipped to you directly. I will promise that all boxes are of good quality. My Puzzle boxes will move smoothly, because I will check and test all puzzle boxes before shipping. If you have a question, Please feel free to ask me anything. Thank you!. Hiroyuki Oka"

The puzzle box outside (Length) size : 1 sun (Mame / 4.3cm / 1.70inch) , 2 sun (6.0cm / 2.35inch) , 3 sun (9.0cm / 3.54inch) , 4 sun (11.6cm / 4.56inch) , 5 sun (15.0cm / 5.90inch) , 6 sun (18.0cm / 7.00inch) , 7 sun (21.0cm / 8.25inch).