A как насчет MS, MS* и Ch MS?

как то так:

Coins of exceptional appeal are eligible for a Star () designation, a feature introduced in 2001 by NGC that has since become a valued aspect of NGC-encapsulated US coins.

The Star designation does not indicate that a coin is of higher technical grade than stated on the label (nor, even, that it is at the high end of the spectrum for that grade).
Instead, it indicates that the coin has exceptional eye appeal, usually derived from some impressive aspect(s) of the strike, surface or style.
However, since ancient coins are produced from individually prepared dies, the Star designation often will be awarded based upon some remarkable aspect of a design, and it may be derived partially (though not exclusively) from an important pedigree that adds significantly to its appeal to collectors.