The 20-cent piece was an interesting but rather short-lived denomination. In fact, business strikes of the 20-cent piece were produced only in 1875 and 1876, and if the mintages were large there would still not be a large supply. As it worked out, the mintages were not generally large, making any 20-cent piece tough. However, some are tougher than their mintages might suggest simply because ...
Full Article: Mintage Makes Carson City 20-Cent Piece Rare - NumisMaster
