It is 90% silver and 10% copper.
The 1964 Washington Quarter has .18084oz of pure silver.
The coin has no silver value. 1965 Washington quarters contain no silver, 1964 was the last year for 90% silver coins to be issued for general circulation.
None. Unless the coin has an "S" mintmark, it is a normal copper-nickel coin made out of the same composition as the dime, quarter and half-dollar and is only worth $1.
It is worth it's silver content so it would be worth about $2.50 to $3. (As of 10/7/11)
Value depends on the date, mintmark and grade. The "M" is the designers monogram, it's on all the coins.
any quarter prior to 1961 is currently worth at least 2 dollars in silver content
The 1964 Washington Quarter has .18084oz of pure silver.
$3.00
$50
If you mean a 1966 American quarter, then none.
Currently none.
$10
Pre-1965 silver quarters are 90% silver with a total weight of 6.25 grams, which is then 5.625 grams of silver per quarter.
The Actual Silver Weight (ASW) is .18084oz of pure silver.
The value is only for the silver about $3.25
The silver value is about 5-6 dollars.
The actual amount of pure silver is .18084 of an ounce.