I recently received a Marklin 4076 passenger car and thought it looks like the Marklin 4050 passenger car. I put them side by side and cannot see a difference. Does anybody know what the difference is? I have several of what I think are 4050 cars.

Alex

In my case, I recall I noticed that when you unscrew the 2 screws on the underside that holds the metal frame to the body shell, the screws fit differently between the 2 cars, and the position of the screw holes had different distance from the track. My recollection is that in one of them, the black metal frame could be placed further into the shell of the body. That is my recollection from 30-40 years ago.
These cars had the initial problem that they warped quite badly, the middle part would be higher up, and the 2 ends would be lower down. Very noticeable.

The 1974 catalog describes 4076 identically as 1972 describes 4050, except 1974 (for 4076) adds "Interior fittings" in bold (Kolls has "Innineinrichtung" or "Interior design"). The pictures in each sure look identical from the outside. I can't speak to Bill L's comments about screws, though.