This strange looking beast is a Pentina, a leaf shutter single lens reflex made by VEB Kamera- und Kinowerke Dresden, the company that made Praktica cameras in the 1960s. Under that case is a metal body with a pentaprism on top. There was a fashion for leaf shutter SLR cameras in the late 1950s and early 1960s, and most West German camera companies produced one, as did a number of Japanese firms. This is the only one from East Germany.
I do have other cameras!