The most common French porcelain marks are words and initials. Porcelain craftsmen typically mark their work with their names, locations or initials to claim the work as their own, effectively preventing plagiarism or theft.
Some examples of French porcelain marks denoting name and place are A. Cadmus Congress Pottery South Amboy, Andrea Galvani Pordenone, Astinbury, Ashfield and Adams Tunstall.
French craftsmen make porcelain markings by carving or pressing into the porcelain in their own handwriting, causing each one to look and feel unique. French porcelain initial markings can be extremely detailed, similar in style to a family crest or a modern business insignia.