I've not seen any evidence yet that the main springs were anything but one piece. If the bike was a factory front brake model, there was a rebound spring used above the triple tree, so as to total 4 springs, but the average bike had 2. My guess is they were somebodies replacements. I know that my origanal springs had rusted slightly & caused the I.D. to shrink a bit & then when powdercoated the forks, the increase in diameter of the rod kept the spring from moving at all. I wound up buying replacement springs from Wayne (his are made slightly over size to compensate for powdercoating).
Mike Sal