The 1964 Kennedy half dollar, which is 90% silver, contains 0.3617 troy ounces of silver. The 1965-1970 Kennedy half dollars (as well as some 1976 coins issued for collectors), which are only 40% silver, contain 0.1479 troy ounces of silver. The silver proof Kennedy half dollars produced for collectors since 1992 are, like the 1964 coins, 90% silver and contain 0.3617 troy ounces of silver.
One 40% Kennedy half dollar contains .14792 oz of pure silver. The silver proof coins were struck on 90% silver planchets and contain .36169 troy ounces of silver.
The bicentennial Kennedy half dollar is made of a copper-nickel alloy, special collectors coins were struck in 40% silver but they all have "S" mintmarks.
The U.S. Mint did not issue any .999 silver Kennedy coins in 1964.
40 percent silver coins are Kennedy Half dollars minted from 1965 through 1969. 1964 half dollars were 90% silver and coins dated 1971 and after have no silver. The 1970 half dollar was available only in mint sets
A 1960 silver dollar, such as the Franklin half dollar or Kennedy half dollar, typically weighs about 12.5 grams. It is composed of 90% silver and 10% copper.
Kennedy is on the HALF dollar, not dollar. There were no U.S. silver dollars minted in the 1960s. The '64 Kennedy half is 90% silver and extremely common, currently worth about $10.50 for the silver.
No Kennedy half dollar dated 1973 was struck in silver, all are copper-nickel coins. Unless it's a proof coin, the value is 50 cents.
The 1964 Kennedy half has .36169oz of pure silver in it.
Kennedy is still on the half dollar coins.
The 1964 Kennedy half dollar contain 11.25 grams of silver. Kennedy half dollars from 1965 through 1970 contain 4.60 grams of silver.
Not counting commemoratives and other coins minted for sale to collectors, the last half dollar minted in solid 90% silver was the 1964 Kennedy Half. 1965 through 1970 Kennedy halves have a copper core and 80% silver outer layers for a net silver weight of 40%.