This 1931 model on the left is very similar to the 1929 model, it has 3 windows on each side like the 1929 model, it has the small spotlights on either side of the windshield like my Grandfather's and shares the wire wheels shown on the 1929. The windshield has been changed on the 1931 and the bumpers are different. The 1929 model that belonged to the family has some characteristics in common with both the 1928 and the 1931, showing the natural progression between the models.