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<p>[QUOTE=&quot;John Burgess, post: 4828026, member: 105098&quot;]yeah, Mint and proof sets for 2009 is supposed to be 95% copper 5% tin/zinc, Bronze </p><p>proof is proof and pretty self explanatory. </p><p>the mint set is a satin finish until 2010.</p><p><br /></p><p>Circulation strikes are composed of an inner core alloy of 99.2% zinc and 0.8% copper with an outer plating of pure copper and business strike finish.</p><p><br /></p><p>so there&#039;s 4 Business strikes in Zinc, 4 Proof in Bronze, 4 mint set bronze with satin finish..... 12 total?</p><p><br /></p><p>I haven&#039;t seen anyone as of yet locate wrong planchet errors for these like a business strike on a Bronze planchet, or a proof on a zinc planchet, or a mint set zinc or non-satin.... I don&#039;t know if this error happened, maybe there are packaging errors though between the mint set and business strikes without satin finish, but not &quot;wrong planchet&quot; errors I don&#039;t think, at least not yet.[/QUOTE]</p><p><br /></p>

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