I am a self taught gun restorer. A friend gave me a S&W .22 revolver to work on. His daughter found it in the trunk of a car that she bought. It is a 6 shot revolver with a 6 inch barrel. It has adjustable rear sights and wood grips. If im looking at the right number the sreial number is 268XX and has a G over it. That is inside where the cylinder crane closes. There is also another number on the bottom of the barrel. It is K9391. That on is also on the bottom of the grip on the frame. Can anyone tell me what I've got and when it was made? Is it worth much? Thanks.