I looked at a stat sheet for a 1959 Speedster and it shows that the fender # for it is 5102. The fenders that came with the bike are 2-3/4" wide, painted w/ stripe, and holes drilled for two braces. They also have reliefs for the front forks.
There is no 5102 on the chart that is shown above in post #2 BUT there is a #5102F. It fits the description of the fender that I measured but the 5102F is chrome plated.
Was the 5102 discontinued into 1962 when this chart is dated?
Could there have been different fenders fitted on bikes with different hubs (coaster, 2 speed, 3 speed) ?