Things You'll Need
Instructions
Use a jeweler's loupe to inspect the item for a silver standard mark. The presence of this stamp means that a piece has fulfilled the criteria to be sold as a silver in a particular country. On American silver look for the words "Sterling" or "Sterling silver" or the number "925", which signifies that the piece contains 925 parts silver per thousand. On British silver, you should see the so-called "lion passant," an emblem of a walking lion in profile.
Look next for a maker's mark. On British cutlery this will usually consist of a set of initials, while on American cutlery it can also be the maker's surname -- in fact, the maker's surname is often the only piece of information you will find on early pieces of American silver. Any guidebook to hallmarks will have a list of important maker's stamps.
Look for a date letter and assay office mark on British silver. These will tell you exactly when and where a piece was assayed -- i.e., passed to be legally sold as silver. Using a guide to British hallmarks, look up the assay office mark first, and then consult its individual date letter cycles for a precise year.