The huge flamboyant coat of arms at the top of the organ case is that of the short-lived Duchy of Saxe-Zeitz. It was established in 1656 as a secundogeniture of the electorate of Saxony but returned to the main Saxon Wettin line in 1718. The coat of arms is explained (in German) but Naumburg is easy to recognize by the symbols of the patron saints: key (St Peter) and sword (St Paul). Naumburg’s shield is again used lower on the organ box — the current town shied is the symbols in red on a white background.