I have a Contessa Nettel Deckrullo camera, film format 13x18 cm. It is a German strut machanism camera and came with an uncoated Tessar with a pneumatic shutter on it's tail. I read somewhere that the Deckrullo cameras were made in formats from 6x4,5 cm to 13x18 from 1926 to 1938.
The focal plane shutter (the Deckrullo) does not function. I have not so far found any way to make it fire, anyway. Did any of you ever service a thing like this, or know where I can find information about servicing and use?
Have a nice day! Svein Lindberg