What year? Assuming its one of the old Chicago Schwinn Continentals, its probably electroforged steel and weighs more than your car. If you don't mind weight, these are bombproof frames.
You also probably have to decide on whether or not you want to deal with a 1-pc crank (assuming it has one).
I would try to get a picture of the bike, or at least find out the year. You can do this to the month of manufacture if you have the serial number.
I had a 79 continental, heavy, tough, rode like a cadillac. Great commuter or beater frame.