Decent article on so called classic carry guns, some nice choices but personally would pass on the SW99, known to many who had issues with this model.
www.gunsamerica.com

Classic Carry Guns - Give Used Guns a Shot
Used guns are a great way to shop for a bargain-priced self-defense pistol. As we accept more modern guns with modern features, like rails, optics, and ambidextrous controls, we can find guns that lack those features for a relatively fair price.