I don't know the Trek 1200, but if it is in good shape mechanically, fits you, and you like the way it rides, almost any non-X-Mart bike is worth $125...
Classic and Vintage definition varies, but it seems that pre-brifter is a good bet, some like to see them older before fitting into the bracket...
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Slow Ride Cyclists of NEPA
People do not seem to realize that their opinion of the world is also a confession of character.
- Ralph Waldo Emerson