In 1982 and 1983 the Mint did not produce any Mint Sets. Therefore, it is much more difficult to find 1982-1983 P and D Quarters in higher Uncirculated grades. Even raw examples in MS64 command a significant premium of about $5 - $10 or so. In MS65 condition they are very tough. In MS66 condition they are extremely scarce. In MS67 they are even more difficult to find and definitely worth setting aside if one is found.