A study in lithography
American Flyer not only made changes to the contents of existing sets for large buyers but, in the case of J.C. Penny's, they changed the lithography treatment of the cars as well.
The gondola on the left is the standard American Flyer #1109 EJ&E 4 wheel with a litho treatment suggestive of a steel sided gondola. The gondola on the right, while retaining the overall appearance of a steel sided gondola, is marked for Nation Wide Lines.