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image by mrgarris0n (Image rights)
The Certo Box was made in Germany by Certo c.1935. It is a sheet metal box taking 6x9cm images on 120 roll film. The control below the lens sets aperture sizes of f11, f16 or f22. The shutter has 'M' ('I'), 'B' and 'T' settings. There are Watson-type viewfinders for horizontal and vertical format. The front section of the camera, containing the lens, shutter and finders, hinges away from the back to allow the film-holder insert to be removed for loading.
There were two models, Model A (illustrated) and the slightly less basic Model B. The Model B has a better, "Certomat" lens.
- McKeown, James M. and Joan C. McKeown's Price Guide to Antique and Classic Cameras, 12th Edition, 2005-2006. USA, Centennial Photo Service, 2004. ISBN 0-931838-40-1 (hardcover). ISBN 0-931838-41-X (softcover). p.194