Sterling silver flatware over 100 years old is considered antique. The hallmark, or stamp, identifies if a piece is made of genuine sterling silver and its age. Flatware refers to cutlery and flatter pieces of tableware, such as plates and dishes.
Age does not set the value of an antique item. However, sterling silver is a precious metal, so this factor alone adds value. Sterling silver flatware was mass-produced in the Victorian and Edwardian period, rendering today's pieces less collectible, as they are not considered rare. The pattern on the flatware can add value, if it was patented and not mass produced.