Dimes, quarters, and halves dated 1964 and earlier, and dollars dated 1935 and earlier, were struck in an alloy of 90% silver. The government controlled the price of silver at that time and fixed it at $1.29/oz so the amount in each coin corresponded to its face value.
When demand for silver increased the government was forced to let the price float, and coins became worth much more for their metal content than their face value. In 1965 dimes and quarters were changed to cupro-nickel clad composition and the amount of silver in half dollars was reduced to 40%. By 1971 halves were changed to cupronickel as well, and the new dollar coins introduced that year were also made of the same metals. 1964-dated silver coins are not rare as collectibles. Most are worth their melt value only. That varies depending on the price of silver but has averaged 8 to 10 times face value during 2008 and early 2009.
Note that nickels and cents from 1964 DO NOT contain any silver, despite urban legends to the contrary.
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(02/2009 - prior answer replaced because it was completely incorrect regarding both the percentage of silver in and metallic composition of U.S. coins)
Yes, but 1964 was the last year for circulating 90% coins.
1964 was the last year for any 90% silver coins struck for general circulation.
1964
It was 1964 when the last coins in the US were made from 90% silver.
For 90% silver coins (1964 & before) 10.2537 grams.
Sorry no US dollar coins dated 1964
For the answer, visit: http://www.coinflation.com/coins/1946-1964-Silver-Roosevelt-Dime-Value.html
A pound of silver coins is about $500.00
U.S. silver coins dated 1964 and earlier are almost all composed of 90% silver and 10% copper.
The only US coins made for general circulation after 1964 to have silver are the Kennedy half dollars dated 1965 to 1969, but they only contain 40% silver not 90%
August 24, 2009 1400 grams of silver coins are worth $571.60.
For 90% silver coins (1964 & before) 10.2537 grams.