Traded into this 1958/1959 20 inch barreled Mod 39A Mountie this afternoon at the LGS. First Mountie that I have ever seen in person. It has the wrong front sight hood on it--will have to look into getting the correct pre-1973 round model. It also has the old flat hammer extension with the JM proof mark---kinda nice seeing that on a '50s Marlin. I hope to get this rifle to the range this week if my work schedule allows that.