Last weekend my father gave me a camera he had gotten from an old man that lived in the same apartment complex when he was stationed in Germany in 1969. Folded up it's 5" wide, 6 3/8" tall and 2 1/4" deep and is covered in a black leather material. It's been sitting on a shelf since my father got it and I haven't had a chance to clean it up and test it for light leaks yet. We opened it up once and it looked ok but it's definitely going to need a little work. The lens says Gammaz No2, Wollensak USA on the outer edge and Hofmeister, Jena. Syrcomar-Doppelanastigmat 1:4.8f - 13.5cm No. 48363. There doesn't seem to be any other markings on the camera... well at least that I can see. It came with 5 single sheet film holders that you slide in place of a panel that has the viewing area. On the side is a metal tag that says Photo-Porst Nurnberg with an odd symbol in the center. Any ideas what it might be?