Here's a link for the specifications:

http://www.trfindley.com/flschwinn_1...0/1991_28.html

You just scored a really nice touring bike with a 23" (58cm) frame. Notice that it has cantilever brakes. Hopefully it is in good condition...not abused. These bikes go for $200 +/-, depending on market and condition. If the frame is a good fit for you, get out and ride it!