what year did silver coins stop
1964 was the date on the last 90% silver coins. Silver coins were  actually made up through the early part of 1966 but the 1964 date  was used on all of those. 1965 was usedâ¦ on the clad coins that were  made in that year. So any dime, half dollar or quarter with a date  of 1964 is 90% silver.