partially unplated ? did you notice the rim looks cut down? Damage .... aka PMD Just because it looks different, does not mean it is an error. start thinking "damage" first. Inspect it, and try to figure out why or why not it would be damage. Then go from there. It is unlimited what ppl do to coins.
Post mint damage. It has been ground down on the edges by a sharp tool. Not partially unplated, unfortunately.
The process of plating is a chemical/electrical one, so the copper is deposited by a random method, so a thin layer is first deposited, and then it continues until the specified thickness is obtained. The rim with no copper is statistically not possible without human intervention. here is an article by a fellow member and expert Mike Diamond that helps identification. Jim https://www.coinworld.com/news/us-c...n-the-error-collectors-clearinghouse.all.html
@desertgem His 1st thread - https://www.cointalk.com/threads/2016d-lincoln-“partially-unplated”.319714/ I don't think he read the responses and he created another thread.. This one
I think I see a pin mark on his neck, which looks to be dead center. Positioning for a lathe to grind down the edge with a simple file.
forgot to mention. All the plating loss looks to be on high marks that could have been filed off too .. you can see drag marks on the shoulder. Is someone trying to create errors ?