Online resources like CoinStudy and the Numismatic Guaranty Corporation provide current values of United States silver dollars that date back a range of years. Along with silver prices, gold, platinum and palladium bids are listed, as well as other rare coin values.
The Coin Study website suggests that silver dollar owners can assess the value by identifying the date, the mintmark and the grading, which is dependent upon the coins series. The online tool provides charts outlining silver dollar values and gives a comprehensive overview of how to determine the grade.
Numismatic Guaranty Corporation provides a table that illustrates various types of silver dollars and their associated values. The company also gives up-to-date information regarding bidding and asking prices of the listed precious metals.