Ceci est une pipe,  (This is a pipe)

Size: 15"x5"x10"

Material: Wood, Clay, Marble, Bronze

The Treachery of Images (Ceci n'est pas une pipe), 1929 by René Magritte.

Created using a fragment of a clay pipe, dredged from the river Thames, its form restored without its function by a wooden violin bow, uplifted by interior parts of a flute.