Manufactured from 1957 to 1959. This model shared the "C" type lenses with the IIIC type rangefinder cameras. With this type of lens the rear group of elements were built into the shutter and the front group only was exchanged. Like the IIc, IIIc models the camera was available with Heligon or Xenon lenses and wide angle or telephoto components had to be of a matching type. The meter was a single range uncoupled type as on the IIIC.
One variation I have noticed is that earlier production models lack the focus knob on the knurled focus ring at the rear of the shutter housing.
