Is this really a Sandro Botticelli?
Attribution not certain: Joconde, collections des musées de France (Licence Ouverte) lists 'attributed Botticelli Sandro (1444-1510) (attribué à)'.
Counts toward your Sandro Botticelli progress, not toward Musée des Beaux-Arts et d'Archéologie de Besançon's count.