mystery mail package

Hi, this is what was in the mystery package a few day's ago. It is a Japanese, Burmese or Chinese writing box. If anyone could tell me it's origin I would be very glad. I'm very happy with it. It was very, very dirty and some of the hinges were missing.It is a very old box. I repaired it as good as I could, but it still needs a new lock. I am going to use it for storing my oil paint etc... There is even a big space behind the shelves where you can put your canvas etc... This box can stay in the living room, so that, when I want to paint, I have everything by hand. Because this is often the problem with lazy people (like me). That when they want to do something in the evening, and it is to much work to take everything out, they end up doing nothing.
Vroefke has already fully examined the box and she tells me it's okay.