Looking for any info on this lens, for curiosities sake.
Goerz Dagor S/N 396151 (same number front and back)
Other info on the front ring:
f 7.7 FOCUS 19"
I am guessing that this is made in the US, since the focal length isn't in MM. One of a number of old lenses aquired when I took over an old studio. Thanks for any information!