The roughness of the timbers inclines me to say it is not German

But then again, the Swiss-built church house in Berne Indiana has some very rough timber surfaces, which surprises me (they must have been in a hurry to get it up, and maybe did not have a proper axe for finishing)

Swiss framers at least, and what I understand this is true in many parts of Germany as well, make timbers, often even in barns and granaries, as smooth as they can get them.

Was de eine ilüchtet isch für angeri villech nid so klar.