Inflation caused the silver content of coins to be worth more than their face value so the US mint stopped making silver coins for circulation.
U.S. dimes, quarters, and half dollars dated 1964 or earlier contain 90% silver. Then half dollars 1965-1970 are 40% silver. After that, no circulating coinage contains any silver.
US dimes were 90% silver through 1964. In 1965, the US shifted to clad coinage (75% copper, 25% nickel) for circulating coinage.
1964 for all 90% silver coinage, with 40% silver half dollars until 1970.
no to soft to make coins out of solid silver . .999% is the most silver in any coin .
Just recently with the advent of bullion coins such as the American Silver Eagle. Coins intended for circulation were never 100% silver because silver is simply too soft of a metal for coinage. They were 90% silver in American coins until 1964 for dimes, quarters and half dollars, but other than bullion coins, no coins are made of 100% silver.
The term is actually "coin silver". In the US it refers to the alloy of 90% silver and 10% copper that was used up till 1964 for dimes, quarters, and half dollars, and up till 1935 for dollars.
1964 is the last date for silver quarters. To be annoyingly technical, 1964-dated silver quarters were actually struck for a while in 1965 during the transition to cupronickel coinage, but there's no way to tell them apart from coins made during calendar 1964.
The last year that 90% silver coinage was issued for general circulation was 1964. Kennedy Half dollars were struck in 40% silver from 1965-1969.
1964 was the last year for silver in dimes and quarters, period. Half dollars 1965-70 contain 40% silver. By 1971, there was no silver in any new circulating coinage.
1964 for dimes, quarters, and half dollars at 90% silver. Halves were then 40% silver until 1970. The only silver coins since then were special collector issues, but none for general circulation.
Yes, pre-1964 silver dollars in the United States are made of 90% silver and 10% copper. This composition was used for US silver coins until the Coinage Act of 1965 when the silver content was reduced.
The Philadelphia Mint hasn't produced silver coinage for circulation since 1964. A 2003-P state quarter is worth 25 cents.