When I read the judging standards (page 4-7) it states "Mid-1928 through late 1929 forged fender brackets had round ends without a boss on the outer end."
Two sentences later it states that "From Jan 1929 through the end of production, the front and rear fender brackets were stamped steel".
It appears that the forged brackets required one hole that was larger than the other two whereas the stamped ones used three identical diameter holes. Were all the frames drilled with one larger hole in 1929 and therefore either forged or stamped could be used on a given frame?
Two sentences later it states that "From Jan 1929 through the end of production, the front and rear fender brackets were stamped steel".
It appears that the forged brackets required one hole that was larger than the other two whereas the stamped ones used three identical diameter holes. Were all the frames drilled with one larger hole in 1929 and therefore either forged or stamped could be used on a given frame?