All quarters from 1796 to 1853 contain 6.1 grams of silver 1853 to 1964 contain 5.6 grams of silver Some of the 1976 bicentennial issue quarters are partial silver -- 2.3 grams Lastly there are silver proof state quarters that contain 5.6 grams of silver. Excessively worn coins will have some of the silver worn away. If you have a pile of 1964 & older quarters and want to find the silver content, weigh the pile -- remembering to weigh them in TROY ounces -- then take the total weight and multiply by .9 -- this will give you the weight of the silver contained in the pile.
The 1964 Washington Quarter has .18084oz of pure silver.
It is 90% silver and 10% copper.
$3.00
$50
Please check your coin again. The US didn't make any quarters dated 1933.
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.