c. 1800–1899
found on the item produced in the last quarter of .
The source reports this mark on an item made in the last quarter of the 19th century; it does not give mark-use dates.
Pottery & porcelain · a closer look
Gerz mark: W., c. 1960–1990
Other Gerz marks
c. 1800–1999
Rhein Stoneware Gerz late 19th and early . Gres Rhenana ges. gesch.
Described as late nineteenth to early twentieth century.
After 1949
Gerz Made in Germany seit 1862
The mark was used after 1949; seit 1862 is part of the wording.