I have been really searching for over 6 months for a 3913ls...I just traded a marlin 336w (non jm 20012) in beautiful shape.1 mag only.Beautiful shape very clean in side.Barly any powder residew.Well the next day I had another one come in front of me.I jumped on it.I traded a clean M69 44mag.Well this little beauty has scroll work on the slide..3. Mag,keydex holster with 2 mag holster..The one with the scroll work has a extened slide release and the decock is taller.The slide is cut out more.The square notch above barrel.The hammer sticks out while the other is flush..One slide is dull and one is shiny...Any info would be greatly appreciated.Thanks all.