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<p>[QUOTE=&quot;Oldhoopster, post: 5933912, member: 84179&quot;]From the pics, it looks like some type of residue, like glue or resin.&nbsp; There is also a lot of wear and damage on the rest of the coin, so it circulated for a while. </p><p><br /></p><p>I agree with [USER=44615]@paddyman98[/USER] there isn&#039;t anything in the minting process that would Cause a feature like yours.</p><p><br /></p><p><br /></p><p>[USER=117839]@Zayne Eldridge[/USER]</p><p>Please make sure you know and understand the information before posting an answer.&nbsp; It&#039;s easy for experienced collectors to see that your response doesn&#039;t make any sense, but new collectors may become confused.&nbsp; I feel that it&#039;s very important to give new collectors accurate information so they can learn and grow in the hobby.&nbsp; Posting inaccurate info doesn&#039;t help</p><p><br /></p><p>Here is a link that explains occluded gas bubbles. You may also want to read up on lamination errors as they are closely related.&nbsp; Remember, these defects occur during the ingot casting process, before it&#039;s rolled into a strip, so they are usually elongated.&nbsp; Bubbles in copper plated cents are plating defects. Also, zinc will not &quot;leak out&quot; of a copper plated cent during the minting process.&nbsp; Temperatures don&#039;t come close to reaching the melting point of zinc</p><p><br /></p><p><a href="http://www.error-ref.com/?s=Gas+bubble" target="_blank" class="externalLink ProxyLink" data-proxy-href="http://www.error-ref.com/?s=Gas+bubble" rel="nofollow">http://www.error-ref.com/?s=Gas+bubble</a></p><p><br /></p><p>The error-ref site is a good place to learn about the different types of errors and how the occur.&nbsp; Also look at the following&nbsp; to learn the minting process. </p><p><br /></p><p><a href="https://www.usmint.gov/news/inside-the-mint/how-coins-are-made-coin-production-terminology" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://www.usmint.gov/news/inside-the-mint/how-coins-are-made-coin-production-terminology" rel="nofollow">https://www.usmint.gov/news/inside-the-mint/how-coins-are-made-coin-production-terminology</a>[/QUOTE]</p><p><br /></p>

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