I have an older steel frame (could not even attempt to guess what year it was made). It has a reynolds 853 sticker on it and it weighs approximately 6.2 pounds (frame and fork). The guy that I got the frame from told me that it was a Lemond frame, but it is 56cm and, from what I can tell, Lemond seems to make frames in odd numbered sizes. I cannot find any rust on the frame and it appears to be in good shape.

Now, my question: Is this frame worth building on or should I try to buy a newer road bike? I already have a full tiagra group (minus the bottom bracket), wheels, and a seat. I have been mountain biking for years, but I've never really dealt with the maintenance of a bike.

I have already taken this frame to two of my local bike stores and the employees did not seem to know what was going on, so, as crazy as it may sound, I'm turning to the internet for advice.