Quarters were never made of sterling silver. It's too soft. They were made out of coin silver, which has more copper in it, until 1964.
US silver coins were made from coin silver (.900 fine), not sterling silver (.925 fine).Please see the Related Question for more information.
1964 was the last year that quarters were made of silver for general circulation.
All circulating quarters dated 1965 and later are made of copper-nickel, not silver.
The last silver quarters were dated 1964. Your coin is made of copper-nickel and is worth 25 cents.
A US quarter dated 1915 does contain 90% silver, so yes it is silver
US silver coins were made from coin silver (.900 fine), not sterling silver (.925 fine).Please see the Related Question for more information.
1964 was the last year that quarters were made of silver for general circulation.
It was made before 1964, therefore, it is silver. The last year quarters were made of real silver was 1964.
The last year the American half dollar, quarter, or dime where made of silver, for general circulation, was 1964.
If the bowl is stamped "sterling," it is genuine sterling silver, not silver plate.
Pre 1964 quarters are made of 90% silver. Sterling silver is 925%. So no. Yah that's right. But I think you missed a decimal point out! Sterling silver is 92.5% pure also denoted 925 in millesimal fineness
Sterling silver
Look to see if 925 is engraved inside the ring, if it is it is made from sterling silver.
It may mean that the ring is made of sterling silver.
Sterling silver can easily be differentiated from plated silver if the silver was made in the United States. It will either say 'sterling' on the metal or have an engraving of its purity. Sterling silver is 92.5% pure silver. If it was made outside the United States, there will be a different stamp applied to it.
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.
US dimes were never made in sterling silver. They were made of a slightly less pure alloy called coin silver.