Akasazh, 11 months ago Aside from the answers already given, the were ways of folding letters that were tamper proof, destructive in opening, called letter locking. Here’s an article on the prachtige: arstechnica.com/…/locked-for-300-years-virtual-un…
Aside from the answers already given, the were ways of folding letters that were tamper proof, destructive in opening, called letter locking.
Here’s an article on the prachtige: arstechnica.com/…/locked-for-300-years-virtual-un…