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<p>[QUOTE=&quot;non_cents, post: 1699946, member: 30970&quot;]The mint changed the composition of the cent in 1982. Instead of being 95% copper and 5% zinc, the cents are now 97.5% zinc with a 2.5% copper plating. I there are impurities in the plating it can cause plating bubbles (which can also pop). The plating can also be pushed, shifted, or even split on coins. These are all &quot;plating issues&quot;.[/QUOTE]</p><p><br /></p>

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