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<p>[QUOTE="Randy Abercrombie, post: 3791134, member: 92655"]I am not a post-1982 Lincoln expert and if I am wrong, I apologize..... I have seen cents with this appearance. I personally attribute this to a bubbling up of the thin copper layer. See the zinc core acts as an anode on these cents so the copper layer almost becomes a sacrificial lamb to the zinc core. They are prone and extremely susceptible to all manner of surface oddities. I fully suspect that in fifty years zinc core Lincolns will be quite rare simply because they are prone to and will deteriorate over time.[/QUOTE]</p><p><br /></p>
[QUOTE="Randy Abercrombie, post: 3791134, member: 92655"]I am not a post-1982 Lincoln expert and if I am wrong, I apologize..... I have seen cents with this appearance. I personally attribute this to a bubbling up of the thin copper layer. See the zinc core acts as an anode on these cents so the copper layer almost becomes a sacrificial lamb to the zinc core. They are prone and extremely susceptible to all manner of surface oddities. I fully suspect that in fifty years zinc core Lincolns will be quite rare simply because they are prone to and will deteriorate over time.[/QUOTE]
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1991 cent problem
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