Either a "wheat penny", silver dime, silver quarter, silver half dollar, half dollar, dollar, bicentenial quarter half-dollar dollar, error coin
HALF a dollar - $0.50
If the coin is a US Kennedy half dollar dated 1974 it has no silver in it and is face value.
It's a Half Dollar NOT a dollar coin. The coin weighs 12.50 grams and contains .36169oz of pure silver.
The last circulating silver U.S. coin was the 1969 half dollar.
11.25 grams of silver.
With a date of 1979 the coin has no silver in it. 1969 was the last 40% silver circulating US half dollar. The coin is worth 50 cents.
It's a Walking Liberty half dollar with a value of about $12.00. The coin is very common.
About $5.00
$100,000,000
The coin is a Franklin half dollar (1948-1963) and is common. If the coin shows any wear, value is about $10.00 just for the silver.
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.