US Coins were never made of pure silver, it's too soft. They had at least 10% copper in them so they wouldn't wear out right away.
Please see the Related Question for more.
It's worth about $4 for its silver content.
The 1962 Franklin half dollar is one of the highest mintage of the series, most are valued for the silver at about $11.00.
Most post-1970 mint sets are worth about $15-25, however, silver proof sets are worth quite a bit more. Pre-1970 sets are worth more because they have a 40% silver half dollar worth about $5 on its own. 1964 and before proof sets are worth even more because the half-dollar, quarter and dime are 90% silver. However, you need to post an actual year and the type of set for us to provide a real value.
1964 and earlier: 90%. 1965-70: 40%. 1971-present: 0%.
Still no 1942 silver dollar US coin. If you mean a 1942 US half dollar it's worth $7.00-$9.00 in circulated condition.
As of today the value is about $6.00 just for the silver
The coin is only 40% silver and has a value of $2.73 only the 1964 Kennedy half dollar was 90% silver.
At present, it's worth around $10.50.
Most of the coins are valued for the silver at about $6.25
The 1964 Kennedy half has .36169oz of pure silver in it.
The U.S. Mint did not issue any .999 silver Kennedy coins in 1964.
The 1964 Kennedy half dollar is a 90% silver coin 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 $10.00.
1964 was the only year JFK halves were made of 90% silver alloy. The composition was changed to 40% silver clad in 1965, and to copper-nickel clad in 1971. A 1964 Kennedy Half Dollar contains .3617 ounces of pure silver. Multiply this by the spot price of silver to get the bullion value of the coin. At the time of this writing, silver was $16 an ounce, making a 1964 Kennedy Half Dollar worth about $5.80
4-11-11->> 1964 Kennedy half dollars are very common, most are valued only for the silver about $13.00
It's a half dollar not a dollar. The coin is very common, most are only valued for the silver, about $12.00
At present, it's worth just over $10 due to its silver content.
It is a common coin and only worth its silver content, which is about $12 at the time of writing.