New Discovery 2020-D Lincoln Shield Cent Mint Error/Overpolished Reverse Die Variety

I'm surprised they would list something so minor on the label, but I suppose the TPGs are always happy to pocket a little more money on any job.

@mb You always come with some theorem which do not meet the mint standards. Hypothetical maybe, practical NO. Here we do not emphases on the vision of the people which like in Etsy or some-ones in E-bay show scrap like the most never see error. Please read the follow article to understand better and please do not the come to teach us or Me how the Mint work or what it is the production tolerances.

https://www.PCGS.com/news/coin-error-or-variety

Just think; an error it is if someone cross the street and so not look left and right and is hit by a car and finish in wheelchair. This was an error. So think better before you assert something. In the Mint process human mistakes are errors, dies aging are not errors, only variations of the striking process and are in the norms of the minting process.

We wish to be perfect but we are not, so we are each of us a variety of the humanoids.

@MB. Is no really consensus on collecting about terms. Manny use same terms from 30 and more years, hard to change. In my posting I told you about the official approach of error and variety. In general what is due to a die is variety and not error, with some exceptions.

The article you refer I know very well. Before to be publish the article, I had a conversation with the editor, him ask many others also. I was not 100% for but I agreed on.

For example: Is say Lamination. From point of view of technology it is complete erroneous. You have Lamination (glad is a lamination process), you have de-lamination (ex: the glad surface will foliate) and Ex-foliation (separation of the same material due to the process of rolling.) The employ of the correct lexicon took time and maybe generation to be in place.

I think we have both consensus on this. My point was just: you to not over contradict base on hypothetical cases. In my Lab we contradict like this because all we want to come to the right and same conclusion, but here it is not the case.

Hope you understand me well, and I like you push out an article, which show me you are on the good track.

PS: Try to read the Mint development and the lines of production by years. Hope you can find this. Suggest first Mint web and their database, and also ANA academia. I do not give link to this.

Also: the majority agrees that the planchet and strike are errors and the die are variations so varieties with some exception where the humans actions intervene.

Die polishing is just a die event. One of many the dies go through. Die polishing is used to rescue a die that has issues. Not sever enough to retire the die, but polished to cover:
1. Die damage from Clashes


Polished devices become thinner as the field is removed and the width of the bases of the devices are removed:




2. Die dents from being dropped on another die, damaging one or both.




When polished off, they weaken the edge of the devices:



3. Extreme Feeder Finger Damage.






Rescue is what is achieved. Saving a die to strike more coins with it before retirement.