I'm not sure what you mean by "not all silver". The normal composition for 1964 and earlier quarters was an alloy of 90% silver and 10% copper referred to as "coin silver". The two metals were mixed throughout, so there is no copper edge visible.
My guess is that your coin has been damaged in some way that makes it appear to be in a metal other than coin silver. In that case it's worth about $3 retail due to its silver content.
True, a very small number of 1964 quarters were accidentally struck on cupronickel "sandwich" blanks intended for 1965 clad coins and do show the copper core very clearly. However none of these have been reported in circulation for many years.
The value is only for the silver about $3.25
1964 was the last year for silver quarters.
1964 was the last year for silver quarters.
7-29-11>>> 1964 is the most common date for a silver Washington quarter. Most are valued for the silver only, at $6.00 as of today.
The value of a 1964 quarter depends on the current price of Silver. As of 2014, the value is approximately $4.00 to $6.00.
The 1964 Washington Quarter has .18084oz of pure silver.
f you mean a US quarter dated 1964 it's not sterling silver, it's coin silver (.900 silver & .100 copper) and value as of today is $3.25 just for the silver
This is a novelty or magic coin with a value about $8.00
depending on condition worst to perfect its worth 6.50-15 $
1964 was the last year for silver quarters. At current market prices, one is worth about $5.
The Philadelphia Mint hasn't produced silver coinage for circulation since 1964. A 2003-P state quarter is worth 25 cents.
The coin is so common if it has any wear at all, the value is for the silver only, about $5.00.