I have seen carbon spots removed from a supergrade Liberty Nickel. The problem was that while the black carbon was gone, it was replaced by whitish spots instead. They weren't as eyecatching as the carbon, but you still noticed them, because they did not fit with the rest of the coin.
I wasn't impressed with the results.
"Vou invadir o Nordeste, "Seu cabra da peste, "Sou Mangueira......."
I sent an indian cent to NCS with some carbon spots and they did pretty much remove the spots but the whole color of the coin was changed to a color in my opinion that was un-natural. mike
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Sorry, I cant remember the name of the dip, got it from Stephans Coins in Ontario, Ca.
problem was that while the black carbon was gone, it was replaced by whitish
spots instead. They weren't as eyecatching as the carbon, but you still noticed
them, because they did not fit with the rest of the coin.
I wasn't impressed with the results.
"Seu cabra da peste,
"Sou Mangueira......."