Whats my car worth?

Most I have ever spent on an A-body purchase was my 75 Swinger. Car has 63,000 miles, 90 percent original paint, absolutely the only rust is a dime size hole in driver rear quarter, and had passed Pennsylvania state inspection when I drove it home for $1500. Oh, yeah, I was under this car on a hoist to make certain that the underside had ZERO rust before I spent the money. Call me a cheapskate.