35mm fixed lens SLR, c1958 Germany, also known as the Colorflex I/II outside the US.
50mm f/2.8 Color Apotar lens
Prontor Reflex leaf shutter: 1 - 1/300th
Interchangeable waist level prism (I) and pentaprism (II)
non-instant return mirror
uncoupled selenium cell meter above the lens