I currently have this Zeiss binoculars from the 80s (therefore the emphasis on “west germany”). They work good enough and are ok-ish sharp, but i think contrast and color rendering are not very good.
I would be interested what others use and what experiences you have with it.
I do wish the button could be a toggle, though. You have to press and hold it down to keep the IS active, at least on the version 3 model. It isn’t too hard to do, but still, a bit annoying to have to tell each person who uses it to push and hold the button or else they aren’t correctly taking advantage of the main feature of these binoculars.