Novicecoins, look at the areas in between the letters and spaces of IN GOD WE TRUST. See how it is discolored and a little muddy looking? Now look at the fields and how much more shiny and newer looking those areas are, that is from polishing. BTW, still a really sweet find tropicalbats!
Polishing or cleaning in any way that affects the surface of the coin = bad. Some detail work with the tip of a green rose thorn or similar is quite acceptable if it doesn't mar the coin. This one was polished and is overly smooth and shows surface scratches. It is worth so much I already gave it away, if that helps you understand how little a coin like this is worth.