Yes - 90% silver, 10% copper.
That alloy, called American coin silver, was used in dimes, quarters, halves, and dollars until the rising price of silver made those coins worth more than their face value, forcing a switch to the current cupronickel "sandwich" composition.
All US quarters dated 1964 or before are 90% silver.
The last year for silver quarters was 1964.
Mintage data for U.S. silver quarters produced from 1796 to 1963 shows a mintage of 3,138,259,970 coins. The mintage data for 1964 is 1,264,526,113 coins this would bring the total to 4,402,786,083 silver U.S. quarters.
1873 to 1964 .18084oz pure silver
1964 was the last year the US produced silver quarters for circulation.
Yes, U.S. quarters and dimes struck in 1964 or before are 90% silver.
Yes. All U.S. quarters minted in or before 1964 are 90% silver.
Yes, they are 90% silver and 10% copper.
US quarters were not made of silver in 1965, but rather of copper-nickel. The last silver quarter made for circulation in the US were produced in 1964.
It was made before 1964, therefore, it is silver. The last year quarters were made of real silver was 1964.
All Washington quarters dated 1964 or before are 90% silver.
Quarters minted before 1964 in the United States were made with 90% silver and 10% copper.