How can I recognize a product of Royal Delft/What is the trademark?

Each product has been marked at the bottom or at the back with a trademark. You can find the different trade marks here.

How can I find out how old my Delft piece is?

Since 1879, each article produced by De Koninklijke Porceleyne Fles has been marked with a letter code. Using the list with year codes you can find out yourself how old your pieces are.

My article has a different mark. How can I establish its origin?

One of the most copied decorations in ceramics is the Delft style, which has a blue image on a white background. The decorations often portray typical Dutch scenes such as windmill scenes and seascapes, as well as images borrowed from Chinese porcelain depicting floral, leaf and stem patterns and scenes with Chinese figures.


Sufficient information about the origin and makers of Delftware dating from the 17th and 18th centuries can be found in trade literature. However, descriptions of marks dating from after the early 19th century are not included in much of this literature.


In the late 19th century and early 20th century, numerous ceramics businesses in the Netherlands and abroad started to produce Delft-style earthenware or porcelain, but the marks of these pieces were not described. In July 1998, Stephen J. van Hook published a book called Discovering Dutch Delftware (ISBN 0-9665009-0-3), which features several other producers of Delftware besides Royal Delft. Another way to establish the origin of an object is via the website