Serial no.N/A,N/A,Condition A
Leitz Wetzlar rare original prototype optical viewfinder for 20 and 40 cm Telyt lenses. Leitz Viewfinders for 20 and 40 cm focal length commercially just existed as "sports" finders SFTOO and SFQOO. Parallel, experimental units of optical Telyt finders were made, but which never reached commercial production. Only a very few specimens of such kinds of experimental Telyt finders have been completed. Compare Leica Historica e.V. "Wilhelm Albert, Geburtstage der Leitz Fotokontruktionen seit 1927", page 212 and James Lager "Leica illustrated History" Vol. III (accessories), pages 43-45.