My mother in law collects antique cameras and this is one of the cooler ones she owns. The plat on the front says "Orionwerk AG Hannover Germany". The lens appears to be a 150mm Schneider Kreuznach Xenar f/4.5.
I made this synth as an example of how (and how not) to make a synth of an object. I put the camera on a white table and used the spot meter to cause the table to be overexposed. Overall it came out pretty well although if you switch to 2D mode you can see that most of my attempts at detail shots didn't register because there was too much of an angle difference between the detail shots and the coverage shots.