Beautiful Japanese puzzle box or secret box "himitsu-bako" 秘密箱
It's made with the traditional craft of Yosegi marquetry.
Dimension is "4 sun" 4.5 x 3.2 x 2.1 inches
It opens in 4 steps. I am not showing the steps as the fun is to discover how it opens! However I put a picture of the box open so you know it can open and it also gives you hints on how to do it.
$35