All circulating quarters dated 1965 and later are made of copper-nickel, and don't contain any silver.
The only circulating coins that were made of 40% silver were half dollars from 1965-1969.
Proof and mint-set 40% silver quarters, halves, and dollars were struck for the Bicentennial and carry the dates 1776-1976.
Other dates of 40% silver Eisenhower dollars were also struck for proof and mint sets.
Forty percent of 800 is 320.
$2.00
9000 dollars
1200
Sixty eight dollars
Forty percent of 800 is 320.
A 1901 silver or dollar is also known as a Morgan Silver Dollar. It is ninety percent silver and usually worth at least forty dollars even in poor condition.
$20
$2.00
9000 dollars
18
6000
$6.60
1200
Sixty eight dollars
14,000 dollars
4.32 dollars