![Karlsbader Porzellanfabrik Carl Knoll 14-4-19-1](pages/data/201404191848Knoll.jpg)
Base mark, dated 1900 - 1910, on the featured stein. showing a raised hexagon with one of the letters of the word PATENT in each of the six corners, complete with an intertwined "CK" inside a circle, in the centre.
![Karlsbad Porzellanfabrik Carl Knoll 1](pages/data/201009221916half L Carl Knoll PATENT around CK_edited-1.jpg)
Relief parien - porcelain stein #178, with gilt highlights, dated 1900 - 1910.
![Karlsbader Porzellanfabrik Carl Knoll 3](pages/data/201009231004img020_edited-1.jpg)
Pictorial image of the hexagonal Carl Knoll mark, shown opposite.
![Karlsbader Porzellanfabrik Carl Knoll 12-12-10-1](pages/data/201212100905IMG_20121210_120428_edited-1.jpg)
Mark on the base of one piece in a tea service, decoration no. #43