Commemorative wall plaque in patinated alloy, decorated in relief with a frieze of pearls, a laurel wreath and the inscription "Diplôme d'Honneur - 1898", surrounded by the words "Exposition Universelle Internationale de Paris". This plaque may relate to the 1st Paris International Motor Show (June 1898), organised under the patronage of the Automobile Club de France (diameter 30.5cm, thickness 1.5cm - oxidation, patina wear).