Falke mods 70, 80, 90 owner's manual in German
I've just posted this rare little green owner's manual - one sheet of A5(?) light card folded into three parts and printed front and back, courtesy of Richard L.
It's the German version of this one in English and is the first one to turn up, to my knowledge.
I imagine very few survived as they were quite flimsy and eminently disposable once read. The information on it is not exactly indispensable.