I'm thinning out my collection of solved take apart and secret opening items. This item has been used only once or twice and only by me. I would describe it as in perfect condition. I fully believe that I have named and identified this item correctly, but please ensure that you are bidding for the correct item. I have had this for about ten years and the box matches other Kamei items. When purchased I fully believed it to be as described here. A well-known UK collector has confirmed to me that this item is "Kamei STAR BOX K21-2 probably 1997".
I was unable to find out any more information on this item anywhere on the internet. This item dismantles in a way which I have not seen in any similar item in my collection. I can't give more details as it would spoil the puzzle, but it takes many, many moves to open it.