This work was made from the idea, "The box will open after the digital numbers are changed."
There are three handles in front of the box.
You can create the numbers on the top board by controlling these handles.
You will see the final number in the bottom of the drawer after open it completely.
It can show many numbers. It is very technical work.
This work was produced by Karakuri Creation Group’s craftsmen, from aselected idea of “13th Karakuri Puzzle Idea Contest”.

Original idea by Yousuke Tanaka
Hand-crafted by Osamu Kasho (Karakuri Creation Group)