In 1930 many cars were given 3 types of new end doors and some cars received 12' wide side openings. We currently have no data on these 1930 revisions. In 1936 some cars were transferrred to auto body loading. A photo of one car shows strengthened side panels and a new roof. As far as we can tell, all versions of the revised cars ran ran concurrently, some into the late1940's.
Decals cover the life of the car.