This is a very nice all original Ruger Single Six revolver that was manufactured in 1959. Mechanically this revolver works great and is sure to be an excellent shooter. It is marked for and chambered in 22 magnum.  This revolver was manufactured in the 1st year of production for the Single Six.  No ox, but the revolver itself is in very good condition and will make an excellent addition to your Ruger collection!