A.C. Diessl vormals Emil Lüdke
Munich, Bavaria
Porzellanmalerei, Studenten-Utensilien- u. Couleurband-Fabrik, Kunstgewerbliche Anstalt.
Porcelain decorator, student gifts & regalia & colour ribbon fabrication plus commercial art centre
The Jena business was purchased from Carl Hahn & Sohn by Emil Lüdke between 1888 & 1890.
The Munich branch was purchased from Emil Lüdke by 1900. It is not currently known if and when it closed.
Reference: Uni-Heidelburg
Artist's signature on Villeroy & Boch - Mettlach #1526, dated 1900. 
Student stein, Villeroy & Boch - Mettlach #1526, dated 1900. 
Copper insert on pewter lid on featured stein "All for one and one for all" 