Marcel Duchamp, American, born France 1887-1968. L.H.O.O.Q, 1919. Rectified readymade: pencil on reproduction of Da Vinci's Mona Lisa 19.7 x 12.4 cm. Private collection © 2006 Marcel Duchamp/Artists Rights Society (ARS), New York/ADAGP, Paris/Succession Marcel Duchamp.

Marcel Duchamp, American, born France 1887-1968. L.H.O.O.Q, 1919. Rectified readymade: pencil on reproduction of Da Vinci's Mona Lisa 19.7 x 12.4 cm. Private collection © 2006 Marcel Duchamp/Artists Rights Society (ARS), New York/ADAGP, Paris/Succession Marcel Duchamp.