They're probably what's referred to as carbon spots, so-named because of the color. Although differing people will tell you they are due to planchet defects, moisture contamination, or atmospheric contamination, almost all agree that they're not actually carbon.
You'd have to do something you really don't want to do to that Dollar to make them go away.
If you can live with them, then fine. Their existence is an accepted part of numismatics, and do little harm to the coin's value, especially a Trade dollar.
You'd have to do something you really don't want to do to that Dollar to make them go away.
If you can live with them, then fine. Their existence is an accepted part of numismatics, and do little harm to the coin's value, especially a Trade dollar.




















