Inherited Jewelry Box

I recently inherited this jewelry box after my grandfather passed away. It was supposedly my great grandmother's who immigrated from Germany. Past that, I have no idea what I have. The box is 16.5 x 8.5 x 11. It contains 6 pull out drawers on the inside. Pretty heavy, it has a lot of inlaid wood. It also has a locking mechanism - no key when I received it.

Any information would be helpful.