1985-D Lincoln Memorial Cent / LMC With Missing Copper Layer?

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Author	Replies: 9 / Views: 6,098
tropicalbats Pillar of the Community United States 6108 Posts	Posted 10/19/2017 08:55 am Just wondering about this coin. Copper layer is missing (not plated) and could it be from mint or some chemistry experiment. Coin shows typical light corrosion on zinc surface (light pimples, not pits), and is correct color for a lightly corroded zinc surface. Scratches on coin show no sign of copper. There is a small groove around the rim where some copper does appear, though, which is the confusing part to me, and traces on the rim surface itself. Flow lines are clear and sharp as if that was the surface of the coin when minted, but can a coin be minted with just a little bit of copper in a groove around the rim from some Die Deterioration issue? Anyway, thanks for looking and comments welcome. Report this Post to the Staff

John1 Moderator United States 56855 Posts	Posted 10/19/2017 09:36 am It did not leave the mint like that,it is PSD. A real missing copper plating will have mint luster,cartwheel effect on it. John1 Report this Post to the Staff
Chase007 Pillar of the Community United States 7512 Posts	Posted 10/19/2017 09:41 am It looks like a metal detector find,coin shows heavy corrosion due to environmental damage with the copper layer disappearing from obverse and the Zinc being exposed.The heavy soil acidity can eat thru. the copper. Report this Post to the Staff
Crazyb0 Rest in Peace 10197 Posts	Posted 10/19/2017 12:42 pm Check out the plethora of YouTube videos on reverse electroplating, or any of the "how to remove copper layers", LJ again? Report this Post to the Staff
moxking Rest in Peace United States 17900 Posts	Posted 10/19/2017 1:02 pm I can see why you would ask. But this is damage rather than missing plating from the mint. Report this Post to the Staff
Mark1959 Pillar of the Community 7234 Posts	Posted 10/19/2017 1:49 pm Lyndon Johnson was metal detecting? Report this Post to the Staff
tropicalbats Pillar of the Community United States 6108 Posts	Posted 10/19/2017 3:47 pm Thanks for the comments! Didn't expect it to be anything interesting but wasn't sure. Report this Post to the Staff
Coinfrog Bedrock of the Community United States 94367 Posts	Posted 10/19/2017 3:53 pm PSD for sure. Report this Post to the Staff
UltraRant Pillar of the Community Norway 1358 Posts	Posted 10/19/2017 4:10 pm Always good to ask when you're not sure! Anyway, I share the opinion that it's PMD. Report this Post to the Staff
jbuck Moderator United States 188629 Posts	Posted 10/19/2017 4:40 pm Quote: Always good to ask when you're not sure! Exactly. This is why we are here. Coin Collector Since 1978 Avatar Old Avatar 7070 Eisenhower Australia Canada World CCF Members on eBay CCF eBay Search Engine Report this Post to the Staff
	Replies: 9 / Views: 6,098

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1985-D LMC With Missing Copper Layer?