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<p>[QUOTE=&quot;Michael K, post: 3943175, member: 78298&quot;]The necro thread lives.</p><p>AmericanVet as previously mentioned in the thread nickels are</p><p>made of a mixture of 25% nickel and 75% copper. It&#039;s the nickel</p><p>part that gives it the color. There&#039;s no copper nickels. (Besides the rare</p><p>nickel struck on copper planchet as shown) and your nickel is 1991,</p><p>they stopped making copper cents after 1982.</p><p>The metals in coins will react to many different things, and turn many</p><p>different colors. Yours is either toned, or rusted, or environmentally damaged.</p><p>Sometimes coins are plated. There&#039;s many possibilities, but in the end,</p><p>it&#039;s a spender. 5 cents.</p><p><br /></p><p>I am not suggesting you do this, but if you put it in a solution of white vinegar with a few drops of hydrogen peroxide, it will probably return to</p><p>a regular nickel color after a little while. (And a little bit whiter as well.)[/QUOTE]</p><p><br /></p>

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