I don't think Nishikis have been made since the 90s so that was probably an older version of 105 than you'd see in stores now. (Nishiki was under the same umbrella as Raleigh for a while, but I don't think those had any real connection to the original Nishikis, and they disappeared altogether about five or six years ago. My favorite bike is my converted '84 Nishiki, but I never tried to shift it!)