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1983 D Lincoln Memorial Penny with MM die depression
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<p>[QUOTE="Oldhoopster, post: 7965916, member: 84179"]The copper plating is approx 8 microns (0.0003"). It doesn't take much to breech the plating, and once that happens, the underlying zinc can start to corrode. It's similar to rust forming on a scratched car fender.</p><p><br /></p><p>In addition, the mint had a lot of problems with split plating during the early years of the zinc cent production. This seemed to occur frequently around the mint mark (possibly to metal flow in that region of the coin). This is what happened to your coin</p><p><br /></p><p>Finally, many people who responded to your post are extremely knowledgeable error specialists and understand the minting process. They took the time to help you. I would suggest that if you disagree, just respond with a thank you, and have your prominent local dealer (I think you said that in the other thread) submit it to a grading service for verification. It will only cost you around $65+, but what do we know.[/QUOTE]</p><p><br /></p>
[QUOTE="Oldhoopster, post: 7965916, member: 84179"]The copper plating is approx 8 microns (0.0003"). It doesn't take much to breech the plating, and once that happens, the underlying zinc can start to corrode. It's similar to rust forming on a scratched car fender. In addition, the mint had a lot of problems with split plating during the early years of the zinc cent production. This seemed to occur frequently around the mint mark (possibly to metal flow in that region of the coin). This is what happened to your coin Finally, many people who responded to your post are extremely knowledgeable error specialists and understand the minting process. They took the time to help you. I would suggest that if you disagree, just respond with a thank you, and have your prominent local dealer (I think you said that in the other thread) submit it to a grading service for verification. It will only cost you around $65+, but what do we know.[/QUOTE]
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1983 D Lincoln Memorial Penny with MM die depression
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