Watch List notes:

Charles II, Restoration of the Monarchy, often known as a Pattern Broad, silver medal, 1660, by Thomas Simon, laur. and dr. bust r., CAROLVS II REX, rev. cross of crowned royal cyphers, shields in angles, MAGNALIA DEI 1660, edge grained, 30.5mm. (MI 464/62; North 2777; KM.Pn31; Lessen, BNJ 1995, type Db), strictly fine with edge bruise by X of REX and other marks and knocks
The condition of this rare medal would suggest it was kept very much as a pocket-piece.
(150-200 GBP)