Here are the top 25 most valuable silver dollars (Morgan's/Peace Dollars) from the late 1800's to the early 1900's (updated: 2020). We've searched through the coin catalogues, books, and online stores and made a huge list of coin values. We then filtered the data to show only the most expensive silver dollars, and this is what we came up with. The dollar coin is a United States coin with a face value of one United States dollar.It is the second largest U.S. coin currently minted for circulation in terms of physical size, with a diameter of 1.043 inches (26.5 mm) and a thickness of .079 inches (2 mm), coming second to the half dollar.Dollar coins have been minted in the United States in gold, silver, and base metal versions. The Morgan dollar was a United States dollar coin minted from 1878 to 1904, and again in 1921. It was the first standard silver dollar minted since production of the previous design, the Seated Liberty dollar, ceased due to the passage of the Coinage Act of 1873, which also ended the free coining of silver.