In 1965, the US Mint began producing Roosevelt dimes using the current copper-nickel clad "sandwich" metal, because the price of silver was going up. The metal in a silver dime became worth much more than 10 cents so people would go to a bank, get rolls of dimes, and immediately re-sell them to a metal buyer at a large profit. Nearly all silver coins disappeared from circulation because of hoarding and melting.
The US changed the composition of the quarter in the same year. For a while half-dollars were made out of a copper/silver clad composition that was "debased" to 40% silver, but by 1971 even the half was converted to copper-nickel.
1964 was the last year for both silver dimes and quarters in the US.
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The U.S. stopped minting silver half-dimes in 1873, a few years after the introduction of the nickel. The only nickels that actually contain silver are "war" nickels minted 1942-1945.
1964 was the last for quarters and dimes
1964 was the last year for a 90% silver dime. No circulating coin was pure silver.
Silver dimes were last minted in 1964 in the US.
All pre-1965 US quarters and dimes are 90% silver.
The first US dimes were minted in 1796. They continued to be struck from silver until 1964. The rise in silver prices forced the Mint to change to the current copper-nickel clad composition starting in 1965.
It's worth exactly 10 cents; the US stopped using silver in circulating dimes in 1964.
1964 and older US dimes contain 90% silver.
US dimes were struck in silver from 1796 to 1964.
US dimes were made of silver starting with the very first dimes back in 1796, and continued as such through 1964.
The last year for silver U.S. dimes was 1964.