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<p>[QUOTE=&quot;physics-fan3.14, post: 2999034, member: 19165&quot;]Yes. But not usually in that shade of blue, and not usually in that combination of blue and magenta. </p><p><br /></p><p><br /></p><p><br /></p><p>You misunderstand me. You won&#039;t see any hairlines or things like that. That color is typical of copper which has been treated with the chemical known as &quot;MS-70&quot;. It is similar to a dip, and is known to react with copper to produce colors like your coin.[/QUOTE]</p><p><br /></p>

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