I've been trying to dig up information on the "S.Y. Japan" rear derailleur on my 1984 Nishiki Century described above. I found this reference to them here: http://www.disraeligears.co.uk/Site/...railleurs.html where it speculates that the company stopped making bike components shortly after 1973...which means either I have a really old derailleur, the company actually kept making bike parts post-1973, or S.Y. Japan doesn't mean what that website thinks it means. The Nishiki in question is over at my bike mechanic right now getting some TLC so I can't get the serial number off the derailleur at the moment, but does anyone else know anything about this brand/company? Any help is much appreciated.