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Nathan F.

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  1. The standards for a grade of 70 don't require perfection. I think that's a shame. I think what they mean by having "no post-production imperfections" is a proof coin can have for example minor "ripples" in the fields vs being PERFECTLY flat. If you hold almost any large (39-40mm+) proof coin on its side and move it back and forth, you will almost certainly see that the flat mirror fields are not actually perfectly flat. It may look like a 150 year old glass pane or window that has "flow marks" in it because glass is technically not a perfect solid at room temperature; it is an amorphous solid. If you look at a 1980's proof Silver Eagle you will see this same effect in all of them. If not for that exception, NO 1986 ASE would be graded PF70.