Here are 10 U.S. dimes that may ... from this year made from copper and nickel sold for $8,400 in 2008. The 1975 No-S proof Roosevelt dime is one of the most valuable of all modern coins.

Most of these are accounted for, but the good news is that some valuable coins are still out ... This coin is sometimes called the Walton Nickel, and experts believe we may not see another one ...