Wow, I haven't seen this for awhile..
I was clearing away some things in order to make room and came across this relic I had long forgot about..
The story is that I recieved this from a friend in the 80's, he told me his relatives cut this in half and or before repainting it sometime after the war and the two pices parted ways.
The item has a moveable eye piece for clarafication and a "Light" damper or darkening knob marked "Klar" "Hell" "Mittel" "Dunkle" going from clear to very dark.. It has a very
faint "Olive / Tan " paint present... Any information will be greatly appreciated... G