I know these cars, but none of them does really fit. I think the bodywork of the skoda comes closest to the car I am looking for. The strange nose was different then that of the 1949 Ford (which is one of my american favourites, by the way); the car I am looking for had it positioned much higher (like the 12M or Studebaker), and it was much more produding. It wasn't embedded in the chrome frame like the Ford, but standing freely, and it was painted green like the rest. Of course it is possible that it was once chrome and got overpainted, but I don't think so.

Edit: For the bodywork: It wasn't that rounded like the skoda, but much more modern then the Standard Vanguard. I think the Borgward Hansa is even closer from the body past the windscreen then the skoda, but has a completely different front end.
It didn't have a split windscreen, and it had flat sides, wings and doors going in one line.
The "nose", or rather horn, had a cylindric shape, ending in a round,spherical tip. I think it wasn't complete smooth, but had kind of rips or some ornament, but I wasn't close enough to check any more details of it. But i am sure it wasn't fixed later on it, but was a part of its design just from the beginning.
If it wasn't a Panhard, as stated in the magazine, it might have been some avantgardistic easteuropean design, or maybe french after all. Maybe it was a conversion done by Panhard for another make, like Simca, etc. I am quite positive that it was no german and no american car.