The one on the right for RFV 2048 marked Silvamar . Pre WW2.
The one on the left, same pattern, Zeiss marked, but a little shorter. Unmarked ddx 6*30 do not fit!
Are Zeiss Dienstglas slightly shorter than ddx? Or is it for something else?
Different case, slightly taller. Any ideas, there is an indistinct mark.