This is a 324-step Super Cubi Japanese puzzle box. I show you the steps to open and close it again. The full name of the design is Super Cubi 324-step Yosegi Muku and it has a beautiful finish. Though I struggle with it due to my hands slipping halfway through the procedure, the action is quite smooth. It was purchased from Izumiya and I am the original owner. Here is the link to the directions for solving it, since there are so many non-believers (go figure):
http://i933.photobucket.com/albums/ad177/eclipsedavephoto/supercubidirections.jpg