Ok. What I suggest is to have the box tested and to find out its gold standard (fineness).
I prefer an Assay office; the Assay office will after determination of a legal fineness stamp the box accordingly. Only with your permission. If not a good jewelry/gold shop will do.
My personal impression the box is a recent copy or in the manner of but looks to be made out of gold, however as far as I can see the box lacks any valid gold (hall) marks. I assume you know more about the provenance of the box.
I checked the book Jan Divis Gold Stempel aus aller Welt under G. Please check for yourself.
![Image](http://img209.imageshack.us/img209/9938/42712596.th.jpg)
Perhaps others could tell you more.
Regards,
Oel