50-500 USD or so
It is worth face value.
It is worth a penny
The coin is face value.
5 cents.
The coin is face value
It is worth it's value.
If it's a regular copper-clad circulating version from Philadelphia or Denver, it's worth one dollar. If it's the 40% silver collector version from San Francisco, those sell for around $6.
As of 10/2009 a 1972 proof set is worth: $8.00 - $9.00.
It's worth 2 cents for the copper.
It's worth 1 to 5 dollars.
A 1972 Kennedy half dollar contains no silver and is worth 50 cents.
If this question is supposed to be about the value, it's worth 50 cents.