Last year I got a 1921 standing liberty quarter, graded VF20 in an NGC holder. A nice coin, a key date, but... after I bought it I noticed a scratch at the middle of the obverse going through the drapery from 11 o’clock to 5 o’clock. Perhaps I got excited about finding this tough date. The scratch goes between 5 to 10 percent of the diameter. Without a 7x loupe you can see it but it’s not too bad, but with the loupe it’s there. The scratch looks pretty old and blends in with the coin. Generally speaking, For a certified VF20 coin, how often would you see a scratch of that magnitude?