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<p>[QUOTE=&quot;rlm&#039;s cents, post: 1184475, member: 7957&quot;]In 1982 they switched to copper coated zinc for the pennies about mid-year.&nbsp; For the first several years, they hada a devil of a time getting the coppe to stick to the zinc core.&nbsp; Where it did not stick, it blistered.&nbsp; Although they have made significant improvement, even today on 69 proof coins you can see some minor blistering.[/QUOTE]</p><p><br /></p>

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