Joseph and Etienne Montgolfier commmemorative medal; Obverse: relief profile busts of Joseph and Etienne Montgolfier depicted, embossed text "JOSE ET ENTIEN MONTGOLFIER TOUR AVIOR RENDU L'AIR NAVIGABLE"; Reverse: relief of the flight of the Montgolfier free balloon over the Champ de Mars depicted, embossed text "EXPERIENCE DU CHAMP DE MARS AOUET 1783 EVNERIU DUNE SOUSCRIPTION SOUS LA DIRCTDE PAIDAS DE ST. FOND"