MS63-graded coins are common and have a slightly-impaired mint luster their surface reveals numerous small contact marks, a few scattered heavy marks, and small hairlines visible without the aid of magnification. The grading scale ranges from MS61 to MS70 (proof). For example, some numismatists will not collect anything less than MS63-graded Saint-Gaudens coins. They are also popular for building an entire series based around a favorite type (or types).
Pre-33 coins have been an attractive option for hobbyists who want to upgrade the coins in their type sets or trade up generic common-dated coins to ones with scarcer semi-key or key dates.
