I suppose you are trying to date it and figure out what you have.

Easiest thing to do is date the parts.
http://www.vintage-trek.com/component_dates.htm

Once you have the build date then you can look at the corresponding catalog and match up the parts to figure out the model. If the parts are dating late in the year the bike may be the next year model.

http://www.miyatacatalogs.com/