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<p>[QUOTE=&quot;Clawcoins, post: 4020497, member: 77814&quot;]not similar at all</p><p><br /></p><p>What you have a zinc core lincoln cent.&nbsp; They are very susceptible to minting problems and later circulation problems.&nbsp; In this case the mint mark is imploding from corrosion.&nbsp;&nbsp; Look up (a) split plating; (b) plating blisters; (c) occluded gas bubbles; (d) corrosion domes and you&#039;ll learn a lot just from that. From mid 1982 to current they changed the composition from basically mostly Copper to mostly zinc with a thin 8 micron copper plating.</p><p><br /></p><p>The mostly zinc composition ends up reacting with the copper plating and creates corrosion when exposed to various compounds ... So any break in the surface can start a corrosion process in other locations on the cent.&nbsp; Your cent has several corrosion spots.</p><p><br /></p><p>here I circled in Yellow the major corrosion spots (in various phases of corrosion) on your cent.&nbsp; The Die Deterioration long spot looks like it&#039;s corroding too.</p><p>[ATTACH=full]1057188[/ATTACH]</p><p><br /></p><p><br /></p><p>fyi, it is always best to start your own thread.[/QUOTE]</p><p><br /></p>

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