50 cc of Paris Air is a Dadaist Glass Sculpture created by Marcel Duchamp in 1919. It lives at the Philadelphia Museum of Art in the United States. The image is used according to Educational Fair Use, and tagged Sculpture. Source
Duchamp bought this small glass ampoule from a Paris pharmacist as a souvenir for his friend and patron Walter C. Arensberg. In 1949, the vial was accidentally broken and repaired, which begs the question: Is the air even from Paris anymore?