1879-S Morgan Silver Dollar. Reverse of 1878. Top 100 Variety. MS-64 (NGC). Unlike its readily available Reverse of 1879 counterpart, the 1879-S Reverse of 1878 Morgan dollar is very scarce in MS-64 and rare any finer. This is a brightly frosted near-Gem displays a fully brilliant appearance throughout. A bold impression and minimal marks are additional attributes.