They're the figment of a advertising agent's imagination, trying to hype private sales. No Kennedy halves have ever been "lost". This is an attempt to play off the fact that in some recent years halves have only been struck for purchase by collectors, so they're "lost" to circulation.
1971 Kennedy half dollars are face value only and are still in circulation.
200 US Kennedy half dollars weigh approximately 7.12 pounds. Each Kennedy half dollar coin weighs about 11.34 grams.
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 DOLLARS exist only half dollars. Post new question with a date.
1964, the year after Kennedy died.
50¢
Kennedy half dollars minted between 1965 and 1970 contain 40% silver and are worth around $5 each.
....They haven't stopped being made. New Kennedy half dollars are minted every year. 2001 is the latest year intended for circulation, but you can buy 2011 Kennedy half dollars in mint sets and in bags on the mint's website.
No 1963 Kennedy half dollars exist. 1963 is the last year of the Franklin half dollar. 1964 is the first year for Kennedy.
The best thing to do is type in Kennedy Half dollars on your browser and click on images.
Kennedy half dollars from banks or in change are just 50 cents.
No such thing, but Kennedy Half dollars are very common, look at the coin again and post new question.