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<p>[QUOTE="mikediamond, post: 1683485, member: 1859"]One form of improper alloy mix error involves an abnormally high fraction of tin and/or zinc. This creates a brassy look and the coins are therefore often referred to as brass cents. I have no objection to the term and I sometimes use it myself.</p><p><br /></p><p>However, a brassy appearance is no guarantee of an elevated level of tin or zinc. A brassy color can develop due to storage conditions and other environmental factors.</p><p><br /></p><p>More information on brass cents can be found here:</p><p><br /></p><p><a href="http://www.coinworld.com/Articles/ViewArticle/heavy-brassy-1941-cents-probably-have-a-prosa" target="_blank" class="externalLink ProxyLink" data-proxy-href="http://www.coinworld.com/Articles/ViewArticle/heavy-brassy-1941-cents-probably-have-a-prosa" rel="nofollow">http://www.coinworld.com/Articles/ViewArticle/heavy-brassy-1941-cents-probably-have-a-prosa</a>[/QUOTE]</p><p><br /></p>
[QUOTE="mikediamond, post: 1683485, member: 1859"]One form of improper alloy mix error involves an abnormally high fraction of tin and/or zinc. This creates a brassy look and the coins are therefore often referred to as brass cents. I have no objection to the term and I sometimes use it myself. However, a brassy appearance is no guarantee of an elevated level of tin or zinc. A brassy color can develop due to storage conditions and other environmental factors. More information on brass cents can be found here: [url]http://www.coinworld.com/Articles/ViewArticle/heavy-brassy-1941-cents-probably-have-a-prosa[/url][/QUOTE]
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1978 bronze ?
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