The photo below shows examples of these symbols, as well as the most common Town Marks.The Date Letters are especially tricky, as the various towns used different lettering schemes to represent the years.
To look up a maker’s mark, use the Alphabetical Listing by Maker’s Name by clicking a letter.
Older pieces may be simply signed “MEXICO SILVER.” Pieces stamped D. The second letter of the signature represents the initial of the last name of the artisan, and the number following is the sequential number assigned to that artisan.
So “TB-188” indicates a Taxco artisan whose last name begins with the letter “B” who happens to be the 188th artisan who registered with the letter “B.” 925-1000: Here is the section of 925-1000for Mexican Silver Marks: Mexican Silver Marks on Antiques’ Antique Jewelry University: Here is their list of Mexican Jewelry Maker’s Marks: Mexican Jewelry Maker’s Marks on Antique Jewelry University British silver jewelry marks are the most complex, as they include various letters and symbols.
The examples shown in the photo below are from David Andersen in Norway, and Meka in Denmark.
925-1000 Swedish Hallmarks Page: This page has a chart with the Swedish Date Code Marks.