This is an S&W 22 rimfire 7 shot single action spur trigger revolver. The serial number is 40241 and the mechanical function is very good crisp and tight. The barrel is tight to the frame and has a very good bright and shiny bore. It retains 60% fading blue finish. This is only 1/3 of the way through production. They were made 1868-1881 and this one probably 1871 or 1872.