Otto Wagner, Projekt Mietshaus Künstlerhof, 1917-1918, Otto Wagner
Inscription: ,,del-kaka-schuhe dirt - who enters (steps into) is greased · what do you want you "patzer" (bungler) · with the s"
the text refers to the 1938 aryanised jewish company del-ka (later delka), an austrian shoe retailer based in vienna that still exists today.