|The bumpers measure 60" in length (from the center of the eyes) as with all cars after approximately August 1930. The arms had square cut ends. Rounded end began appearing in early 1931. Note the dull silver color on the edges and back. The original plating process was similar to today's, i.e., Copper plate, then nickel plate, then chrome. However, the nickel plate over the copper base produced a dull gray finish unless buffed. Buffing the face produced a high luster in the nickel and the final chrome produced the color and contrast shown with no reflective quality in the un buffed areas.