Carbon spots 0

[NevadaS&G]

Hello all, can carbon deposits or dark toning spots be removed thru ngc conservation. I have a very similar coin as to the one in the picture.

[Conder101]

They can be made less noticeable, but they will still be there.  A hard corrosion spot like the one on the pictured coin has actually etched into the surface of the coin and there is no way to remove that.  It will always reflect light differently than the undisturbed metal around it, and that will keep it visible.

[James_OldeTowne]

A chemical process might lessen how noticeable it is.  It can also be abraded off mechanically, and that might erase it completely, but there will be unavoidable hairlines (cleaning, or tooling) in that area.  As a general rule, I wouldn't try to "help" it, unless it's actively growing (which can be difficult to determine).  In that case, leave it to the professionals.