If the coin is an "S" mintmarked silver proof coin, it's 90% silver.
It is 90% silver. The rest is copper.
A 40 percent silver quarter, often referred to in the context of U.S. coins from the 1965-1970 era, contains 40% silver and 60% copper. Each quarter weighs 6.25 grams, so the silver content is approximately 2.5 grams of silver per coin. In troy ounces, this is about 0.0801 ounces of silver per quarter.
No such coin exists, however, coins dated 1964 and before are 90% silver and 10% copper and they are worth around $5 in silver content at the time of writing.
About $3 for its metal content. A scrap dealer will pay wholesale, though
Around $5.88 for its silver content. These were made in large quantities and therefore are only worth their metal value.
90% silver
2002
It is 90% silver. The rest is copper.
About $3 due to its silver content.
80% silver, 20% copper
silver content in 1867-1967 Canadian quarter
It is a common date and worth about $5.25 in silver content.
All U.S. quarters dated 1964 or earlier contain 90% silver and 10% copper.
It's worth around $5.50 for its silver content.
Face value only since no silver content.
About $3 for its silver content. A dealer will pay less.
July 5, 2009 Sterling silver must have a silver content of 92.5%. The 1944 US silver Washington Quarter has a silver content of 90%. This quarter in circulated condition has a value from about $3.50 to $12 depending upon the actual condition of the coin. In uncirculated condition its value ranges from about $14 in the lower grades to about $75 in the better grades of uncirculated.