Seven $1 coins that once traveled to space sold today in an auction. The sale prices ranged from $120,000 up to $550,001.

Collectors hunting for valuable coins don't have to reach back a century or more to find them -- they can pop back a few decades to the era of disco music and leisure suits. Several U.S. coins ...

The typical penny may cost more to produce than its worth, but these rare examples prove that the 1 cent coin often betrays ...