Over the years About Uncirculated 58 graded coins have been called “Super Sliders,” “Borderline Uncirculated,” “Unc. with rub” or other interesting terms. Coins graded AU-58 just miss being full Mint State because they have a slight amount of friction on the design high points. The difference between an AU-58 coin and an AU-55 piece, with the same level of slight wear, is usually in the number of contact marks on the coins. An AU-58 coin should have fewer contact marks.

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