L.H.O.O.Q. and wrote "Moustache par Picabia / barbiche par Marcel Duchamp / avril 1942". As was the case with a number of his readymades, Duchamp made multiple versions of "L.H.O.O.Q." of differing sizes and in different media throughout his career, one of which, an unmodified black and white reproduction of the "Mona Lisa" mounted on card, is called "L.H.O.O.Q. Shaved". The masculinized female introduces the theme of gender reversal, which was popular with Duchamp, who adopted his own female pseudonym, Rrose Sélavy, pronounced "Eros, c'est la vie" ("Eros, that's life"). Primary responses to "L.H.O.O.Q." interpreted its meaning as being an attack
De ou par Marcel Duchamp ou Rrose Sélavy (La Boîte-en-valise) carrying case (the prospectus describes it as a "leather pull-out box"), 40 x 37.5 x 8.2 cm, containing 69 reproductions of the major works by Duchamp, including many photographs, lithographs and miniature replicas of ready-mades like "Fountain", and reduced-sizes models on (cellulose acetate) such as "The Bride Stripped Bare by Her Bachelors, Even." From 1941 to 1966, 312 boxes were produced for subscribers. The first 22, titled "La boîte-en-valise" or "Valise", were made by the artist himself (as luxury editions) and contain an original work. All are signed "De ou par Marcel Duchamp ou Rrose Sélavy" ("From or by Marcel