My copy of the box is white oversized white cardboard mailer box with same artworks glued to top.
My versions is thin, yet big in other dimensions. I have also seen thicker, yet therefore otherwise smaller box done.
I would guess, orders for this was taken over long period of time, and contents and the glued artworks remained the same, yet what kind of box you happened to get, varies on when it was done. It's all official and authentic, but simply many different types of packaging was made.
Just like some labels do. Think of RRR, where ordering something like Merzbow "Batz tou tai" 2xCD packaging can be almost anything. I think RRR also mentioned that some of those big plastic tape boxes were discountinued. So the original packaging of all those 5x tape sets might have already changed? For items with no specific edition number, being as big as they are, you might not be able to find the identical packaging all the time. The M.O. box is re-issues anyways, so is it first re-issue copies assebled, or one of the many editions, I doubt there is much meaning for the price...
