Binoculars with bakelite case

[StuG III]

Thanks mate. Any idea how I can find out who made the case? Ade's link does not cover this type, unfortunately.
Tom

[RoyA]

That's a DIN logo (Deutsche Industrie Norm) or Germany Industry Standard.
I've never been able to find a wartime DIN listing.

[StuG III]

Is there any truth in the assumption that the '20' in two squares next to the serial number denotes this piece as being a refurbished Bulgarian army postwar re-issue? Having trouble trying to locate info on this. Thanks.
Tom