The U.S. didn't mint any silver dollars that year.
80% Silver
The 1966 Kennedy half dollar is 40% silver and worth about $5.00.
It's only partial silver -- worth about $2.00
Its worth about $5 in scrap silver. It is 40% silver and only worth scrap silver.
It's worth about $4 for its silver content.
This coin is 40% silver. Too bad it is not from 64 or earlier, as those were 90% silver. It is worth a dollar or two.
It's currently worth about $4 for its silver content.
There is only 1 silver coin, the 40% Kennedy half dollar which contains 4.6 grams of pure silver.
1966 Kennedy half dollar is 40% silver and valued at about $2.50 for the silver.
$28.50
Twenty five cents each. Silver-plating adds no value.
All US 1966 half dollars are 40% silver, containing about $3.32 worth of silver at the time of writing.