Please post more specific questions. Provide the coins' specific dates, and whether there is a small mint mark letter on the back (over DO in DOLLAR, up to 1921; near the word ONE, 1922 and later).
how much is a 1799 silver dollar worth
It's still worth one dollar.
how much is a 1924 silver dollar worth
1896 silver dollar is worth how much?
how muchis a 1875 silver dollar worth
A Washington silver dollar, believe it or not.
How much is a silver Kennedy half dollar worth?
How much is a 1968 kennedy silver half dollar worth
One dollar.
One dollar.
It depends greatly on the year, early silver dollar proof dollars can be worth several thousand dollars, modern silver dollar proofs of common dates might be worth $20 or so for silver scrap.
If it was made from 1 US silver dollar and has all of the silver in the silver dollar still within the spoon, it is worth $22 in silver content.