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<p>[QUOTE="Insider, post: 2481517, member: 24314"]Toning around the edges is very desirable at the moment. The more colors of the rainbow the better. The darker colors blue, purple, and black indicate the oxidation is thicker. Black is bad and often indicates that corrosion (same as oxidation) has begun. </p><p>The colors around the edge are areas where the coin's surface is closest to something containing chemicals such as sulfur that react with the silver. If all the coins are in the old white 2x2's they were put in when you bought them, that is the cause coupled with chemicals in the safe's atmosphere. Are any of the staples rusty looking?[/QUOTE]</p><p><br /></p>
[QUOTE="Insider, post: 2481517, member: 24314"]Toning around the edges is very desirable at the moment. The more colors of the rainbow the better. The darker colors blue, purple, and black indicate the oxidation is thicker. Black is bad and often indicates that corrosion (same as oxidation) has begun. The colors around the edge are areas where the coin's surface is closest to something containing chemicals such as sulfur that react with the silver. If all the coins are in the old white 2x2's they were put in when you bought them, that is the cause coupled with chemicals in the safe's atmosphere. Are any of the staples rusty looking?[/QUOTE]
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Black spots on BU collection
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