Musée National de l'Age Médiévale, Paris
Originally in the Château de Rouen
St. Peter sits on a curule chair, which was used by the magistrates of ancient Rome and was a symbol of their authority. Carved into the sides of the chair are two lion faces, which were not a feature of the ancient chairs. Perhaps they here symbolize the saint's power.
More of St. Peter
Photographed at the museum by Richard Stracke, shared under Attribution-NonCommercial-ShareAlike license.