Hello everyone,
i have a "Dienstglass" i bought a while ago and would like to know if i got things right while researching it, also wondering what case to look out for since i would like one for it.
Its seems very used and in a rough state ( knob at hinge missing also ) but the optics work fine (to my novice eye).



Carl Zeiss - Jena - Dienstglass - 6 x 30 - 1977522 - H/6400 - WaA 202
I think it is a "Silvamar" lightweight, produced in the end of 1939 from what i could find, would this be a correct assumption?
In regards to the right case for it i'm wondering if Zeiss would likely have shipped these in a case of their own or one from 1 or more different companies.I read bakelite cases came out in 1939 so would be suitable to, although maybe unlikely for this particular one?
Any corrections and/or additional information are greatly appreciated, thanks for having a look!