50-100

5+10x Marine-Glas mit Revolver: ipd scale, signed in script, S/N 117. I don't think these add much to the debate, as they're all within the known envelopes. (I have two other Zeiss glasses with low serial numbers---a Fernglas 08 Galilean, and a Zeiss (London) British Army No.3 prismatic, both of 1916---but these are clearly not relevant to the ... ................
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