A silver dollar weighs 26.73 grams. This weight is for the silver Morgan dollar coin that is currently available as of 2014; the combination of silver and copper makes up the weight of the coin.
Throughout history, there have been many silver dollar coins. The silver Morgan dollar coin is one of the most popular and has been in circulation for many years. It often stands at face value, but many collectors choose to sell the metal that is in the coin to make a slight profit depending on the rate of the metal prices.
In the past, quarters and dimes contained silver and were able to function much like the silver dollar of modern times. The silver dollar is one of the only coins prominent in circulation that still contains an amount of silver in it.