I hope Ozzie is not to confused.
Some of the answers here are misleading.
The most common silver coins will be the dime, quarter, half dollar and dollar, made 1964 and older.
To be more clear.
Silver
War Nickels were made from 1942-1945, but not all 1942's are silver. That year they had both
35% silver and regular nickels.
As for "S" mint with 1976 coins, (quarter, half dollar and dollar) they made both cu clad and silver.
And they are dated 1776-1976.
The 3 cent coins, they made both 3 cent nickel and 3 cent silver.
The
Half Dime was mentioned (correctly) as silver and also there is the 20 cent silver coin. They stopped making them in the 1870's.
Then you get to the modern stuff. They started making silver proof sets in 1992. Every year since then,
will have a silver proof dime, quarter and half dollar. Since 1999 there will be 5 or 6 silver proof
quarters each year. But all these year also have clad proof of the same coins.
Finally starting in 1982 the U.S. mint started making what is referred to as modern commemorative coins.
Most years have at least one or two silver commemorative dollar coins. There are a couple of the modern half dollar commemorative coins that are silver, the 1982 George Washington and the 1993 Bill of Rights half come to mind.