Before you head to the laundromat, you should look through the quarters you plan to spend. You may have a rare coin better ...

Beyond that, the proceeds from selling a valuable rare coin could add tens of thousands of dollars a year to your nest egg.

Before you head to the laundromat, you should look through the quarters you plan to spend. You may have a rare coin better suited to be auctioned off or artfully displayed than used to wash your ...