1983 P Lincoln Memorial Cent / LMC Obverse Impurity

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Author	Replies: 9 / Views: 900
NY Islander Pillar of the Community United States 979 Posts	Posted 07/05/2022 1:47 pm Your feedback is appreciated. This isn't an inclusion, a zinc bubble or metal moved from the surround area of the coin. Tried pressing the occlusion with a tooth pick and there is no deformation. Looks to me this imperfection was stamped into the coin. The imperfection isn't what I have seen referenced before - staple or cloth. Close inspection from every angle this appears to be small twisted pieces of metal. Do the professionals have any ideas? Thanks PS: It's not a snot rocket either. "We are all flawed, some MD and some PMD." NYI Report this Post to the Staff

ijn1944 Bedrock of the Community United States 19147 Posts	Posted 07/05/2022 2:03 pm I'm thinking a die gouge/pock--a blemish in the die. Report this Post to the Staff
merclover Bedrock of the Community United States 10635 Posts	Posted 07/05/2022 2:05 pm Most probably die chips. Report this Post to the Staff
NY Islander Pillar of the Community United States 979 Posts	Posted 07/05/2022 2:08 pm Die chips make sense. Thanks. "We are all flawed, some MD and some PMD." NYI Report this Post to the Staff
coop Bedrock of the Community United States 62064 Posts	Posted 07/05/2022 2:24 pm Looks like a zinc dust accumulation on the planchet before the coin was plated, and is under the plating. Not a plus for the coin. Report this Post to the Staff
NY Islander Pillar of the Community United States 979 Posts	Posted 07/05/2022 3:00 pm Thanks for the feedback. Never heard of a zinc dust accumulation before. Nonetheless, it's cool enough for me to keep in my meager the collection. "We are all flawed, some MD and some PMD." NYI Report this Post to the Staff
coop Bedrock of the Community United States 62064 Posts	Posted 07/05/2022 3:02 pm Very common on the 1980's zinc cents: They later figured out years later it was a poor rinse before the plating: Report this Post to the Staff
Dearborn Moderator United States 95550 Posts	Posted 07/05/2022 3:29 pm Quote: PS: It's not a snot rocket either. If it were, it would be coming out of the nose, not the mouth. Anyways It looks like plating bubbles to me. 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 979 Posts	Posted 07/05/2022 6:04 pm You guys know the coin plating process far better than me. From what I've seen of zinc bubbles and a poor rinse, the bubbles manifest in a more widespread manner over the surface of the coin. I don't seen any evidence of zinc bubbles anywhere else on this coin. Wasn't aware that the zinc dust accumulates in clumps and that is a possibility for this issue. As for snot rockets, unless you have a snout, g=GM/2 Pss: cannot believe I'm arguing snot rocket trajectories with another adult. LOL "We are all flawed, some MD and some PMD." NYI Edited by NY Islander 07/05/2022 6:15 pm Report this Post to the Staff
silviosi Pillar of the Community Canada 6244 Posts	Posted 07/05/2022 6:32 pm The Zinc has the propriety to accumulate dust and oxide very fast. The dust we say in fact it is zinc oxide in a form of a white powder. Sometimes before the plating it is not well clean, then will give those effect to the coins. The rolls of the planchet are not done in the mint facilities, so the rolls could have big delay to the delivery and will stay outside and oxide. Edited by silviosi 07/05/2022 6:33 pm Report this Post to the Staff
	Replies: 9 / Views: 900

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1983 P LMC Obverse Impurity