Inscribed, impressed, painted and printed antique china marks help collectors identify and date antique china pieces. Collectors also consider the color of the china marks or the numbered codes in the designs to associate china pieces with makers and time periods.
Before the first firing at 900 degrees Fahrenheit, while the clay is soft, makers Inscribe their marks by hand, or impress their marks into the clay using a stamp. To make underglaze marks, makers paint or print their marks after the first firing, before applying the glaze. Overglaze marks are usually names or initials that painters and decorators add onto pieces that were already glaze-fired.