It depends on the condition and the mint mark.
The 1920 Standing Liberty Half Dollar minted in Philadelphia (no mint mark) is worth between $7.00 in "Good" condition (note that "Good" is a numismatic term of art meaning "not very good at all") to $75.00 in "Extremely Fine" condition (and $350.00 in "Uncirculated").
The 1920 Standing Liberty Half Dollar minted in Denver ("D" mint mark) is worth between $12.00 in "Good" condition to $475.00 in "Extremely Fine" condition (and $1,550.00 in "Uncirculated").
The 1920 Standing Liberty Half Dollar minted in San Francisco ("S" mint mark) is worth between $7.00 in "Good" condition to $235.00 in "Extremely Fine" condition (and $850.00 in "Uncirculated").
The coin is 90% silver, has 0.3617 troy oz ASW ("Actual Silver Weight") and thus has a "melt value" (at the 11/29/07 troy ounce price of silver of $14.30) of about $5.17.
The coin is a WALKING LIBERTY half dollar, the standing liberty series are Quarters.
Please check the coin's date and denomination US silver dollar production was suspended between 1905 and 1920 inclusive, so there are no 1917 dollar coins. If your coin says HALF DOLLAR on the back, it's a half dollar, not a silver dollar.
Check the date or rather series again. US dollar bills were not made in 1920.
They didn't mint 1920 US silver dollars.
50$
Value is for the silver about $2.50
Please check the coin's date and denomination US silver dollar production was suspended between 1905 and 1920 inclusive, so there are no 1917 dollar coins. If your coin says HALF DOLLAR on the back, it's a half dollar, not a silver dollar.
Check the date or rather series again. US dollar bills were not made in 1920.
They didn't mint 1920 US silver dollars.
50$
A US half dollar with a date of 1979 is a Kennedy half dollar not a liberty half dollar. The coin has no silver and is only face value.
It has a metal value of about $10.
Value is for the silver about $2.50
About $4-5
50 cents.
a half dollar
The US didn't strike any half dollars in 1804.
A U.S. half dollar dated 1953 or 1952 is a Franklin half dollar. If it shows any wear, the value is only for the silver, about $10.00. The coins are very common.