All true silver dollars (the large coins made from 1794 to 1935) are worth much more than face value, if only because of their silver content. As of 07/2010 even the most common ones are worth about $15 for the metal in them. However, many are worth significantly more to a collector but you have to know the coins' dates, mint marks, and conditions to be sure.
If you mean a 1998 Kennedy half dollar, the coin has no silver in it and is worth face value.
Any silver dollars minted in 1935 or earlier are 90% silver and worth several times face value. Eisenhower dollars in the 1970s are copper and nickel and still worth one dollar.
Any US half dollar dated before 1971 contains silver, so it will at least be worth a premium for that.
All half dollars dated 1971 and later are made of copper-nickel, not silver, and are worth exactly face value - 50 cents.
The coin is face value
These coins contain no silver and are worth only face value.
Not silver - copper-nickel. Face value only.
A 1978-D Eisenhower dollar has no silver in it and is only face value.
If you mean a 1998 Kennedy half dollar, the coin has no silver in it and is worth face value.
That depends. If it is a regular dollar made for circulation it contains no silver and is worth face value. But if it's a collectors silver dollar in witch case it should say something like .999 silver then its worth its weight in silver, value changes with the silver market.
If the coin is a US Kennedy half dollar dated 1974 it has no silver in it and is face value.
The only dollar coins issued in 1980 were made of cupro-nickel, not silver. They're only worth face value.
The coins are still in circulation, contain no silver and are face value.
Any silver dollars minted in 1935 or earlier are 90% silver and worth several times face value. Eisenhower dollars in the 1970s are copper and nickel and still worth one dollar.
If its a dollar coin then it is worth 5 times face value...just for its actual silver content there is no rare mint mistake or marking from that year.
There is a Silver Eagle, which is a bullion coin worth almost $20 at the current silver price, with a face value of $1.
Are not silver and have no value over face unless they have an "S" mintmark (which means they were not intended for circulation) or in a mint set.