As far as I know, I'm the only person that is currently offering this item as a reproduction. I have consulted the box that I am making and I must admit that it strikes a number of similarities with the one you've posted. I wonder whether or not it would be possible for you to provide some illustrations of the inside compartments in this box. Also, can you confirm the Control Number printed on the rear hinge of the box is, as it appears, Control: 2K 47136
, or is it Control: 2K 47156
The example I have in my collection (and the one around which the reproduction was produced) features the identical SP Number to the example you've posted, as well as some idiosyncrasies I put into the reproductions to tell them apart from originals. Of particular interest here is the text "Control" on the rear hinge. The original example I have does not have a completed serif on the "t" (i.e. the left serif does not connect to the top of the character) however on the reproductions, it does. I must admit that based on these photographs you've posted, the item looks like an aged version of the reproduction I produce. Obviously it's difficult to say for certain without seeing the piece in hand, or indeed knowing its history. I wonder where you came by this one?