Joined: Dec 2004
Posts: 12,559
Likes: 799
From: Middle of da Mitten
Bikes: Trek 7500, RANS V-Rex, Optima Baron, Velokraft NoCom, M-5 Carbon Highracer, Bacchetta Quattro, Catrike Speed
It's a late-90s, back when GT was a good brand. Lube the derailleur cable and adjust it up, it should be fine. RSX stuff was about the same level as Sora is now, I think. Not fancy but perfectly functional. It's probably not worth a lot, simply because of its age and old componentry.