I have a better date Morgan Dollar that's stained. The stain is such that it has already devalued the coin greatly, based on the price I got it for. Now my question is, is it worth it to try to remove the stain? The way I see it, the coin is already impaired and there would be little downside to dipping it. And if the dip removes the stain, then it would be a cleaned coin, yet at least more attractive than it is now. Thoughts?