Quote Originally Posted by ScottH
(1) facing the lens and to the right of the serial # and inscription DBGM (what might
DBGM := Deutsches Bundes Gebrauchsmuster. Its a way of protecting a design (since its not really patentable) with the German Patent Office.

that be?) is a toggle switch, the down position shows a red dot, and the up position covers it. I've noticed no difference funtionally up/down, what gives?
Double exposure

(2) On the meter side of the camera is the 'take up spool' numbered 1-40, with a red dot over 38, though no apparent funtionality for me so far, using 120 film.
220 Film.