The world's first production version of 35mm SLR, first system SLR, first interchangeable lens camera with bayonet lens mount. An important camera and must have for Exakta collectors. Considering it's age in good condition. The shutter fires. Curtain dry. Exact functions not tested. The lens is a matching Zeiss Tessar 2.8/5cm. Smooth focus and aperture. Some internal haze. Additional flash contact to front