This isn't an error coin but I'm asking for opinions as to whether the fine lines across the entire obverse of this quarter are the result of brushing the die at the mint, for cleaning purposes. This one came from an OGP mint roll and none of then other coins in the roll had this appearance.
I've seen these before on cents. They are rolling lines. If you had a roll of these you would notice that they are in different directions. This would not be the case if they were on the die.
As to why they don't go away after the strike? Maybe because we are looking at it in a microscope. The devices shape the coin. It may just be so small were can only see it looking so closely. When we forget this point, all we need to do is put a hair/toothpick and then we can realize how closely were are looking at something.
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