Zeiss Super Ikonta 531 645 with Zeiss Opton 75mm f/3.5 Tessar T. Takes 120 film for 4.5X6 negatives. The camera needs repair. The gear that connects the focusing wheel to the lens is missing or disconnected. The camera can be zone focused but that defeats the purpose. The lens is a tiny bit hazy. It could probably be cleaned by pulling one or the other of the cells but if you were going to have the rangefinder gear fixed it could be done then. 

The bellows has no pin holes. The shutter release works and the speeds seem in the ballpark. The rangefinder works and seems accurate. The viewfinder is bright and clear. The shutter speed and aperture dials turn smoothly.

The camera shows light cosmetic wear. The case is in good shape with a lovely patina. The hinge is uncracked