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.
Relief parien - porcelain stein #178, with gilt highlights, dated 1900 - 1910.
Pictorial image of the hexagonal Carl Knoll mark, shown opposite.
Mark on the base of one piece in a tea service, decoration no. #43