This used Smith & Wesson Model 12-3 Airweight Revolver is for sale. It features a 4.25" barrel and a two inch round butt, and comes with original packaging, including cleaning brushes and owner's manual.

Model 12 variants—12-1, 12-2, and 12-3—use a narrower hammer and have an aluminum grip frame that is 0.08-inch (2.0 mm) narrower than the standard steel K-frame.