Archivists in Germany will know how to read various forms of Kurrent. And yeah, of course it might not be Hochdeutsch. But anyone who can read the script will

Archivists in Germany will know how to read various forms of Kurrent. And yeah, of course it might not be Hochdeutsch. But anyone who can read the script will know pretty quickly if it's Platt, Swiss German, or something else entirely.