Oval rear window

Someone sent me a photo of a four door sedan, about 1932, sitting in the bush a few hours away from here....and it has an oval rear window....can anyone help me figure out what make it may be with just that one detail?

 

I think Pontiac had an oval rear window.

 

plymouth too

 

mine's oval...heehee

 

Oakland also

 

Thanks....I think this one is a 29 Pontiac

 

The 1926 Rolls Royce had a oval rear window also. HRP