This Minox B is a subminiature camera that is a wonder of design and engineering.
The Minox B has a 15mm f3.5 lens. Aperture is fixed to a constant f3.5 while shutter speeds are controlled mechanically by a dial atop the camera. Speeds range from 1/2 to 1/1000 of a second.
Another dial allows for manual focusing as close as 8 inches. The major innovation the Minox B brought was the inclusion of a built-in selenium cell light meter that is coupled to the shutter speed dial. Capable of producing 8x11mm negatives.
offered AS-IS with a slow shutter(repairable) and unfortunately I'm unable to accept returns