Has anyone ever seen anything like this before? The text is "Notdienst", German for "emergency service". Could be Germany, Austria, Liechtenstein, Switzerland, or maybe a German colony. I've never seen these before, does anyone have any idea what these are?
Looking at these again, the perforations appear to be the same type of serrated roulette Germany used with some of the 1920s inflation (postage) stamps.