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<p>[QUOTE="johnmilton, post: 24434026, member: 101855"]Copper is the most reactive of the three classic coinage metals. It can take on many shades. The early large cent expert, Dr. William Sheldon, once called it “autumn leaves.” He put together a color set of copper coins, which the last I knew was on the market for a very high price.</p><p><br /></p><p>The other two classic coinage metals are silver and gold. They are classics because they are among the least reactive metals to the elements.[/QUOTE]</p><p><br /></p>
[QUOTE="johnmilton, post: 24434026, member: 101855"]Copper is the most reactive of the three classic coinage metals. It can take on many shades. The early large cent expert, Dr. William Sheldon, once called it “autumn leaves.” He put together a color set of copper coins, which the last I knew was on the market for a very high price. The other two classic coinage metals are silver and gold. They are classics because they are among the least reactive metals to the elements.[/QUOTE]
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