There are some exceptions - Kennedy halfs from 65-70 are 40% silver, and Eisenhower dollars from 71-74 are 40%.
The mint did some 40% Kennedys and Eisenhowers in 1976 for the bicentennial, and bicentennial quarters from the San Francisco mint (mint mark S) are 40%.
There are some exceptions - Kennedy halfs from 65-70 are 40% silver, and Eisenhower dollars from 71-74 are 40%.
The mint did some 40% Kennedys and Eisenhowers in 1976 for the bicentennial, and bicentennial quarters from the San Francisco mint (mint mark S) are 40%.
Congrats on some great finds!