IZUMIYA - Hakone Yosegi Zaiku - Himitsu Bako - Japanese Secret Trick Puzzle Box - ONLINE SHOP: 5 Sun 21 Step Mawariyabane (Yosegi Japanese Secret Puzzle Box )
Japanese Secret Trick Puzzle box, called "Himitsu-bako": "personal (secret) box".
Yosengi is the name of the Japanese style of parquetry to create geometric patterns.
This box required 21 moves to open