1997 D Lincoln Memorial Cent / LMC Reverse Embedded Imperfections

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Author	Replies: 4 / Views: 519
NY Islander Pillar of the Community United States 981 Posts	Posted 02/14/2023 12:46 pm Recently came across this 1997 D. The reverse has 3 embedded imperfections on the reverse. The largest of which is photographed. The area around the imperfection rises slightly then drops off and rises again at the site of the embedded object. It's an interesting phenomenon that isn't consistent with any PMD I've ever seen. "We are all flawed, some MD and some PMD." NYI Report this Post to the Staff

coin rejector Pillar of the Community United States 2860 Posts	Posted 02/14/2023 12:54 pm Possibly struck through debris. Report this Post to the Staff
coop Bedrock of the Community United States 62064 Posts	Posted 02/14/2023 1:22 pm Note the wave on the fields. That is an indicator that this happened post strike. If it were a struck through, then the wave would not be present. While this is a light hit to the coin, the opposite side will probably not show a push out on that side of the coin. Note on this coin the push outwards on the opposite side, from the punch damage on the obverse. You coin was hit lightly, so you probably won't see the push out on the obverse. CoopHome: Wave on a coin? What is that? movement from a post strike hit on a coin. this shows that it happened post strike where the hit altered coins field area around the contact mark. often this will also the opposite side of the coin on the other side with a push outwards coin event. Report this Post to the Staff
Dearborn Moderator United States 97084 Posts	Posted 02/14/2023 5:02 pm I'll say it is possibly a bad plating issue, Maybe the zinc planchet was not cleaned good enough and the copper plating could not adhere well enough Collecting since 1972. Learning from then on "Tell me and I forget. Teach me and I remember. Involve me and I learn." - Benjamin Franklin 7070 type set coin count: 51/76 Uncirculated American Silver Eagles My American Silver Eagle Proof Collection Sacagawea Dollars Innovation Dollars Eisenhower-Dollars Kennedy-Half Dollars Washington-Quarters Roosevelt-Dimes Buffalo-Nickels 1938-2005 Jefferson-Nickels Lincoln-Cents Report this Post to the Staff
NY Islander Pillar of the Community United States 981 Posts	Posted 02/14/2023 5:13 pm @ Dearborn - Yes, does seem the planchete may have contributed to the issue, as a result the plating got "sticky" and did not adhere. What strikes me is the unusual shape of the imperfection. Maybe an excessively high or low surface temperature of the die or planchete may have also contributed to the imperfection. Just spitballing with the temps. "We are all flawed, some MD and some PMD." NYI Report this Post to the Staff
	Replies: 4 / Views: 519

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1997 D LMC Reverse Embedded Imperfections