This camera is very similar to the Krügener Delta Camera.
May have been marketed as the "Krauss Tykta"
It may also have been made by Krügener for Krauss to market their lenses.
The shutter is marked EK, for E. Krauss.
The lens is a Zeiss Tessar 136mm f6.3
The shutter works, and the camera is in overall excellent condition.