Most of the ones you'll find are the Gran Tour (usually black) and the Super Gran Tour (usually gold). The first is basic with steel frame and rims, and the Super has nicer parts on the same frame, as I recall. Both will have the hideous and brittle "safety fork ends;" if they look crooked do not attempt to straighten them. If you find one of the nicer Signature bikes it is more desirable but there are also various grades of those and some are much nicer than the rest. Good luck!