(Photo by Stig Baumeyer)
This Mercedes-Benz W120 Kombi (=estate/station wagon) found in Norway not only is a remarkably rare car, but also has a very interesting story to tell. But more about that later.
The normal W120 was built 171746 times between 1953 and 1961 and therefore was quite a common car in Europe at that time. Many examples survived, so it's still not too rare. In addition to these sedans though, Mercedes-Benz also built 5667 chassis frames including engine and transmission, which were meant to be converted to special versions of the W120 by other companies (to help your imagination, here is a picture).
(Source)