I have a zeiss jena 165mm 2.7 in pretty good shape and I am trying to figure out its scarcity (or lack thereof) and ultimately, its value. I have it mounted into a compound shutter that is a direct fit and works perfectly and I also have it attached to a linhof board via a custom machned tube/board that I had made. That being said, it works flawlessly and you can use it on your field camera no problem. I have someone interested in purchasing it from me and I just need some help gauging what to value it at so I don't get taken for a ride.

Let me know.

Hollis