Readymades of Marcel Duchamp to turn up any identical matches to photographs of the originals. However, there are accounts of Walter Arensberg and Joseph Stella being with Duchamp when he purchased the original "Fountain" at J. L. Mott Iron Works. Such investigations are hampered by the fact that few of the original "readymades" survive, having been lost or destroyed. Those that still exist are predominantly reproductions authorized or designed by Duchamp in the final two decades of his life. Shearer also asserts that the artwork "L.H.O.O.Q." which is recorded to be a poster-copy of the "Mona Lisa" with a moustache drawn on it, is
Marcel Duchamp from 1928–1933, favoring hypermodern openings such as the Nimzo-Indian. Sometime in the early 1930s, Duchamp reached the height of his ability, but realized that he had little chance of winning recognition in top-level chess. In the following years, his participation in chess tournaments declined, but he discovered correspondence chess and became a chess journalist, writing weekly newspaper columns. While his contemporaries were achieving spectacular success in the art world by selling their works to high-society collectors, Duchamp observed, "I am still a victim of chess. It has all the beauty of art—and much more. It cannot be commercialized. Chess is