Postcard with photograph of Mortier de 220 mm de Bange (left) and Canon de 155 long (right). Batterie de Saint-Cyr, Yvelines, on the western outskirts of Paris.
{{Information |Description=Postcard with photograph of Mortier de 220 mm de Bange (left) and Canon de 120 long (right). Batterie de Saint-Cyr, Yvelines, on the western outskirts of Paris. |Source=French government postccard. Downloaded from http://lpracht