In my looking for a M1895 Mauser, I have seen receivers that are pristine with white "Mauser ... 1895" lettering. The patina laden receivers, including the one I own, never have this. I actually don't care about the white lettering. It's the pristine 'look' I want. Is this white coloring a left-over from some cleaning abrasive or are these brand-spanking new 100 year old guns?