In 1658 Emperor Leopold hands over the keys of the town gate in a formal ceremony at the Spittlertor in Nuremberg.
Oblation der Thorschlüßel, unknown artist, in: Gold, Renate: Ehrenpforten, Baldachine, Feuerwerke, Nürnberg 1990, p. 179; source: with kind permission of the Hofmann Verlag.