Dated 1920.
Markings:
- left
- – Carl Zeiss Jena
- right
- – D.F. 6×30
- – 1118485
The screen filled reticle has tiny crosshairs, measuring 0 till 7 in all four directions. The vertical scale has subdivisions every 0.2. The horizontal one every 1.0. Unfortunately there are some small black spots.