1987-D Lincoln Memorial Cent / LMC - Underlying Zinc Issues?

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Author	Replies: 3 / Views: 908
Petespockets55 Pillar of the Community United States 5780 Posts	Posted 01/09/2021 08:04 am This is the 1987D LMC that, at first glance, I thought might have been DDO-001. (The MM location on this coin is not the same as DDO-001.) VV Link to DDO-001http://varietyvista.com/01b%20LC%20...7DDDO001.htm There is some clear doubling on BER of LIBERTY(not MD) that resembles the doubling in the link above. There is also minor amounts of split plating issues, some stronger than others. (Imagine that, on a Zincoln.) The coin had a lot of "cup holder" type environmental damage. I "traded" the details grade (environmental) for a details grade (environmental/cleaned) coin to get better images by soaking in Hydrogen peroxide and applying a cotton swab. Peroxide did a decent job and it's currently in Acetone to see if the residual greenish goop can be removed. Look at the images and let me know your thoughts on what may have caused the doubling. I truly appreciate everyone here and hope you take the time to add your insight. Thanks, PP55 (The first images are before the peroxide soak.) These are after the soak. Words of encouragement are one of the major food groups. We need to consume them regularly to thrive and grow. Report this Post to the Staff

That Coin Dude Pillar of the Community United States 1427 Posts	Posted 01/09/2021 1:50 pm Very commonly confused for a DDO, but it is just zinc rot Report this Post to the Staff
Rothery Pillar of the Community 2145 Posts	Posted 01/09/2021 2:16 pm I've read on this forum somewhere that the lines on the letters is caused from a worn die. You can tell there is Die Deterioration as the letters in your closeups seem to be migrating towards the rim. The migration shows on the date also in your first pic. Report this Post to the Staff
Petespockets55 Pillar of the Community United States 5780 Posts	Posted 01/09/2021 9:43 pm Thanks TCD and Rothery. It does have some Die Deterioration but the depressions on BER remind me of a cake that has "fallen" on the interior part. The edges stay raised while the interior sinks. I'm not seeing any notching on the corners. I think the depressions on this coin are from where the zinc has dissolved away (like a form of "zinc rot" as TCD said). I usually associate zinc rot to pinpoints or holes in the surface that allows moisture to accelerate the breakdown of the zinc. It sure mimicked the doubling on the DDO variety pretty well and I just wanted to share for others to see as well. Thanks again. Words of encouragement are one of the major food groups. We need to consume them regularly to thrive and grow. Report this Post to the Staff
	Replies: 3 / Views: 908

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1987-D LMC - Underlying Zinc Issues?