This camera has been in my possession for some time. It has a slide out ground glass viewing screen, the fold out cover of which is marked ZEISS IKON. The shutter mechanism is marked Dr. Aug. Nagel Stuttgart (I understand Kodak bought Nagel in 1931) and the shutter timing control is marked PRONTO. There is also a circular logo which may be seen in the picture. There are no other identifying marks, serial numbers etc. The tube on the front (shown capped) slips over a standard RMS tube. Any information would be most helpful.
