The term "Silver Dollar" typically refers to a large coin made of silver, historically used in the United States. The most famous example is the Morgan Dollar, minted from 1878 to 1904 and again in 1921. These coins contain 90% silver and are highly sought after by collectors due to their historical significance and silver content. In addition to the Morgan Dollar, the Peace Dollar is another notable silver dollar, produced from 1921 to 1935. Silver dollars are often collected for their numismatic value, and their worth can vary based on factors like condition, rarity, and demand in the market.