From 1932 onwards, the shapes that are compiled in this catalogue were numbered. The catalogue itself, with photos and some prices, however, dates from 1945 or even later, and has additions dating from as late as 1953. A second version has additions from even later. Both catalogues are today kept in the Kunstkeramik Luzern company archive at the State Archive of Lucerne, PA 1421/PLA 202.