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<p>[QUOTE=&quot;Midas, post: 67611, member: 2761&quot;]Copper cents before 1982 were made with at least 95% copper and copper is a very reactive metal to the elements.&nbsp; Oxygen oxidizes with copper.&nbsp; Sulfur and copper get together to form Copper Sulfate, which is dark in color.&nbsp; More so than none, it is the oxides that change the color of copper.</p><p><br /></p><p>So, copper exposed to humidity, heat and the elements will lose its red color which is why copper cents are graded as Red, Red- Brown and Brown.&nbsp; Red cents get higher premiums because the older the coin, the harder it is to keep it in its &quot;red-orange&quot; condition, hence the reason they are sold for a premium.</p><p><br /></p><p>As for your other coins like the Walkers, this is where I would start:</p><p><br /></p><p>First do NOT clean any of the coins.</p><p><br /></p><p>Then start here: <a href="http://www.cointalk.org/thread1025-determining-value.html" target="_blank" class="externalLink ProxyLink" data-proxy-href="http://www.cointalk.org/thread1025-determining-value.html" rel="nofollow">How Much Link?</a> </p><p><br /></p><p>Second: Go Here: <a href="http://www.coinfacts.com" target="_blank" class="externalLink ProxyLink" data-proxy-href="http://www.coinfacts.com" rel="nofollow">Coin Facts LINK</a> </p><p><br /></p><p>Third: Go to your book store and buy the 2006 Red Book on Coins:</p><p><br /></p><p><img src="http://www.mintproducts.com/ProductImages/supplies/05redbookhardbig.jpg" class="bbCodeImage wysiwygImage" alt="" unselectable="on" /></p><p><br /></p><p>Good luck[/QUOTE]</p><p><br /></p>

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