This box has gone bad, how can it still hold documents?

Only ones then are intended to be notarized relatively soon

This box can no longer hold documents, it can, however hold 6 bags that hold 2-pound bank notes from England. Depending upon the size of the bags, you may be able to get several thousand pounds in this box, which is impressive given that it is only made of cardboard.

I recommend trashing that box as it's clearly unusable. After disposing of it how you see fit obtain another box