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Filling a US Mint State Quarters Map with Proofs?
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<p>[QUOTE="Conder101, post: 469361, member: 66"]They will tone, but no one can say if they will tone in an attractive or unattractive fashion and they will most likely NOT alltone in the same fashion or pattern. (Just think about this, the coins in the center of the map have a lot of sulfur containing cardboard around them while the one near the edge have most of the cardboard to one side and fresher air to one side.) One other piece of advice, before you put the coin in the board I would advise a quick dip and good rinse or at least an acetone bath to remove any oils or other contaminants from the surfaces of the coin. Any patches of oil or other "stuff" can cause the coins to tone unevenly or in a patchy manner since reactants can get to the exposed metal easier than it can to the metal under the "stuff" and they will tone faster.[/QUOTE]</p><p><br /></p>
[QUOTE="Conder101, post: 469361, member: 66"]They will tone, but no one can say if they will tone in an attractive or unattractive fashion and they will most likely NOT alltone in the same fashion or pattern. (Just think about this, the coins in the center of the map have a lot of sulfur containing cardboard around them while the one near the edge have most of the cardboard to one side and fresher air to one side.) One other piece of advice, before you put the coin in the board I would advise a quick dip and good rinse or at least an acetone bath to remove any oils or other contaminants from the surfaces of the coin. Any patches of oil or other "stuff" can cause the coins to tone unevenly or in a patchy manner since reactants can get to the exposed metal easier than it can to the metal under the "stuff" and they will tone faster.[/QUOTE]
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