In 1965, the United States government stopped making silver from dimes, quarters and reduced the amount of silver in half dollars. It wasn't until 1970 when silver was removed from dollar coins. In 1933, silver became the standard in the U.S. due to the Great Depression and the rule that no Americans can own gold. Say goodbye to the 90/10 mix of silver coins from the United States Mint. The U.S. Mint is now producing silver coinage to 99.9% purity. The increased silver composition will be used for dimes, qu… Dimes and quarters had silver removed beginning 1965. Half dollars went from 90% silver to 40% silver in 1965, and to zero silver in 1971. The last circulating silver dollars were struck in 1935. For dimes to dollars, collector issues with silver content have been made. No circulating coins, though.