The ad is for General Motors but the point of interest here is the TV, from the March 1940 issue of Fortune Magazine.
I made this huge so you can get a good look at it.
I had to scan this in two parts because of the large format, I stitched it together using the free Microsoft Image Composite Editor, it did it automatically with perfect results.
http://research.microsoft.com/en-us/.../projects/ice/