This is Akio Kamei’s Expansion IV crafted from walnut. He writes: This box was developed for the Christmas present for Karakuri Members 2012.
The basic mechanism is similar as "Expansion Ⅰ,Ⅱ and Ⅲ", but the movement is a little different. The puzzle box measures 72X72X72mm.
The puzzle box has been stored in plastic in its original box, and is in like new condition. Shipping to your location can be calculated at auction close, If you require an estimate just send me a message! Many thanks!