Yes, certainly they have stock forms like that pre-printed. But that doesn't really alter my questions. First, when were they printed? I mean, there probably wasn't much thought of needing a mobilization poster in December 1918. (Well, let's say July 1919, since the Armistice was still being renewed biweekly back in December 1918.) But it was probably obviously a good thing to have in reserve in December 1938. When was it printed, then? Where was it stored? When was it shipped from the warehouse to the towns' post offices (or whoever put them up)? Who had to spend the night of the 1st of September writing out dates on the blanks?

I know this is the smallest possible thing about World War II. But it's the sort of boring little thing without which the vast things can't happen.