I bought this Dovo Prima Silver Steel off of a Facebook post. And of course, it looked better in the pictures than when I got it. There is some sort of corrosion along the edge of the blade. And I am wondering how to fix it. I just took pictures of the front because it's the worst. The back has these same marks but just not as bad. It looks like something may have been left on the blade at one point. Like, shave soap or something. It feels smooth to the touch but when I drag a fingernail across it, there is some slight resistance like it's rougher than the rest of the blade. How do I remove this without losing the decoration on the blade?