A 1965 Kennedy half dollar is 40% silver. It has a total weight of 11.5 grams.
It's currently worth about $5 for the silver. Kennedy half dollars minted 1965-70 contain 40% silver.
1965-1970 Kennedy halves are only 40% silver. Most are valued for just the silver, about $4.50.
U.S. half dollars dated before 1965 weigh 12.5 grams and contain 90% silver.
The 1965 Kennedy half dollar is a 40% silver coin (1965-1969) but so many were made only a very high grade uncirculated example is worth more than the silver in the coin. The silver value today is about $2.70
Half dollars 1965-70 are 40% silver and at present are worth about $4.
If it's 1964 or earlier, it's 90% silver. 1965-70 are 40% silver. 1971-present have no silver.
1965 to 1969 Kennedy half dollars were all struck in 40% silver and have a bullion value of about $2.00
A 90% silver (Pre-1965) Half Dollar weighs 12.50 grams, 1965 to date 11.50 grams
As of February 2018, it's worth about $2.50 for the silver.
U.S. half dollars minted in 1965 through 1970 weigh 11.5 grams and contain 40% silver.
There is no silver in a 1972 US half dollar.