Found a large studio camera (Ansco) in an attic, with a 9" X 9" plate with a German lens.
C.P. Goerz Berlin No. 26355
Serie III No.6. F=300 m/m
Doppel - Anastigmat F: 7,7 D.R.P. No. 74437
15 diaphragm blades. #'s on aperature: 6,12,24,48,96,192,384,768
any insights /ideas re: specifics of the lens (history, performance envelope, how to clean, maintain, use).
can be seen at http://contemplativeeye.com/goerzberlin.htm