2 Extra Spots Of Material (2011 D Cent)

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Author	Replies: 3 / Views: 811
CJFos71 New Member United States 12 Posts	Posted 12/30/2020 5:54 pm I found this in a roll of pennies, are these extra mint marks or something else? I did not do anything to this penny, this is how I found it, just as it is. Thank you * Edited by Staff to Add Year / Mintmark / Denomination to Title. Titles are Important! * Report this Post to the Staff

Spence Moderator United States 34455 Posts	Posted 12/30/2020 5:58 pm @cj, first welcome to CCF. Second, those look like zinc blisters, where there is a pinhole in the copper plating and the underlying zinc core has started to deteriorate and expand. Sometimes they are hollow and you can depress them with the tip of a wooden toothpick. It looks like someone was scraping at the blister by the word IN, which is a no-no. "If you climb a good tree, you get a push." -----Ghanaian proverb "The danger we all now face is distinguishing between what is authentic and what is performed." -----King Adz Report this Post to the Staff
CJFos71 New Member United States 12 Posts	Posted 12/30/2020 6:12 pm Thank you for the welcome, I enjoy this forum and all the advice I am getting. It is very helpful. Now why is it a no no to scrap at the marks? And does this make any difference to the value or no. Report this Post to the Staff
merclover Bedrock of the Community United States 10635 Posts	Posted 12/30/2020 11:08 pm It's a "No-No" because scraping at it will accelerate it's demise. It's doomed anyway from zinc rot. Report this Post to the Staff
	Replies: 3 / Views: 811

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