The value is for the silver at $2.25 as of today.
Half dollar minted 1965-70 are 40% silver and currently worth around $4.
It's currently worth about $5 for the silver. Kennedy half dollars minted 1965-70 contain 40% silver.
Kennedy is on the half dollar, not the silver dollar. As of February 2016, a 1964 Kennedy half is worth about $5.50, a 1965-1970 is about $2.25, and 1971 or later is 50 cents.
As of February 2018, it's worth about $2.50 for the silver.
As of 26 December 2014, one is worth just under $6 for the silver.
Half dollars 1965-70 contain 40% silver. At present, it's worth about $4.
1965-1970 Kennedy halves are only 40% silver. Most are valued for just the silver, about $4.50.
Half dollars 1965-70 are 40% silver.
U.S. half dollars dated 1965-1970 contain 40% silver and are currently worth about $3.
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
It's still worth about $4.50 for the silver, a 1965 is 40% silver but the plating adds nothing to the value unless someone wants it.
Half dollars dated 1964 and earlier are 90% silver and are worth about $11 in silver content. Keep in mind that proof, error, and key date coins may be worth much more than pure silver content. And from 1965-1970 the half dollar was 40% silver and is worth about $4.50 in silver content. Half dollars dated 1971 and later are not silver unless found in a US mint silver proof set. Note that any half dollar made during 1965-69 is only partially silver and is worth about $3. Halves dated 1971 and later contain NO silver and are only worth 50 cents.