If you've got a silver or gold Eagle in your coin collection, there are a few collectible characteristics to keep an eye out ...

Maybe a a childhood collection or a keepsake passed down from generations? It may be worth looking to see if any of the coins are valuable or rare, because you could be sitting on a gold mine.

It's true. Costco began selling one-ounce gold bars last year and now members of the warehouse club can purchase silver coins as well. Deciding to add gold and silver to their inventory was a ...