HISTORY OF PHOTOGRAPHY The machine for the demanding photographer. Bertram 6x9 device; handy; safe focus; for universal use. Compur shutter synchronized from 1 to 1/400 of a second. Mobile and interchangeable rear part with frosted glass. Changing the lens; the rangefinder remains coupled with it by means of the Bertram central automatic system; the corresponding focusing scale appears with the indication of the focal length; the exact image and automatic parallax correction are in the viewfinder. Maximum grip readiness with plates; flat and roller films. Ernst & Wilhelm Bertram; Munich; Germany; marketed in Italy by Ippolito Cattaneo SpA; Genoa. Advert in the specialized press; Italy 1955