1992 – 1998 S 7 SETS COMPLETE RUN OF U. SILVER PROOF SETS OGP & COA. Unless stated otherwise, all listings are guaranteed to be genuine. If our coin is certified by PCGS, NGC, ANACS, or ICG, we will list the numerical grade. However, since grading is subjective and just an opinion, we do not guarantee that coins to which we assign grades would be graded the same by PCGS, NGC, ANACS, or ICG. If items are not paid for within 4 days, we will cancel the sale and re-list the item. Many items that are sealed add a premium to the value of the item, once the seal is broken the value is lost! Vintage coins may show some effects of aging and packaging may have some minimal wear and tear. You may be interested in.