WW2 Italian Fascist M.V.S.N. Blackshirt Militia Fighting Knife No Scabbard For Sale

I got this knife from a friend's grandfather back in the early 1980s. This is how I received it. It looks like someone  used a grinder on the end of the blade. It didn't change the shape of the blade and I think it can be restored. The handle is in rough condition. It looks like it was in a war. All damage appears to be very old. There are four marks cut into the back of the handle and a "V" carved into one side. I can only assume their meaning. See pictures as part of the description.