https://www.answers.com/us-history/What_is_eisenhower_liberty_1776-1976_silver_dollar_coin_worht
What is eisenhower liberty 1776-1976 silver dollar coin worht? - Answers
It's just a common bicentennial dollar, worth face value only.
1776 1976 silver dollarwhat iseisenhowerliberty
https://www.answers.com/us-history/What_is_the_value_of_a_quarter_dollar_silver_coin_1776-1976_us_coin
What is the value of a quarter dollar silver coin 1776-1976 us coin? - Answers
Face value- 25 cents. Those are not silver unless it is specially struck proof set coin. Look at the edge, you should see copper on an ordinary quarter.