The 11-year program, "the 50 State Quarter program," ran from 1999 to 2008, during which each state was given a specific quarter design. Most U.S. state quarters retain their original value of $0.25.

Manufacturing errors are not always a bad thing. In fact, in some cases, it can be a collector’s dream, for the “error” is exactly what increases the value of an object. Take, for instance, a Georgia ...