Leica 3C with Summitar 2.0/50mm
The shutter speed ring of this Leica IIIC is provided with a copper ring (see picture). We do not know what this is for.
The shutter curtain does not open very well on the long shutter speeds, so it will need a service if you are planning on using this camera to take pictures. The lens is optically in great condition. Most of these Summitar lenses suffer from fungus, this one is not.
Camera number 506660