1878-S Morgan Silver Dollar. MS-66 (PCGS). CAC. OGH. Frosty and fully struck with a dusting of pale sandy-silver iridescence on both sides. As the premier San Francisco Mint issue in the Morgan series, the 1878-S is a perennial favorite among specialists as well as more generalized silver dollar collectors. The 1878-S is readily obtainable in most Mint State grades, providing many collectors with the opportunity to acquire an attractive example of this historic silver dollar issue. From the Larry H. Miller Collection. From the Larry H. Miller Collection.