This is designed as a miniature bulb which is in a socket. If you look carefully, you will notice that the filament is cut. In this state, this Karakuri box is locked. Wooden gears are used as themechanism．The glass (plastic) cover will not open. Which part is the real cover? And how do you open it?
This work was produced by Karakuri Creation Group’s craftsmen, from a selected idea of “4th Karakuri Puzzle Idea Contest”.

Original idea by Kouetsu Handa
Hand-crafted by Hiroshi Iwahara (Karakuri Creation Group)