Yes.
That part of Germany was once the cultural center of Europe. Worth visiting.
There's a Zeiss Ikon and a Carl Zeiss. It's the same Zeiss but I thought Zeiss Ikon was more camera related.
The lens is from Jena East Germany. And I've an optical waterlevel instrument from Zeiss, and that's from West Germany, search for Zeiss Ni52.
Ted,
Here is a list of Nikon lenses
http://www.photosynthesis.co.nz/nikon/serialno.html. It also shows where the lens was made.
Don't pay to much attention to where it was made. Nikon, in this case, is responsible for the quality. And even when Nikon imports all of the components from China and just assembles them in Japan it's 'Made in Japan', with all Chinese products.
George