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 watch it. Although it is often assumed that the "Bicycle Wheel" represents the first of Duchamp's "Readymades", this particular installation was never submitted for any art exhibition, and it was eventually lost. However, initially, the wheel was simply placed in the studio to create atmosphere: "I enjoyed looking at it just as I enjoy looking at the flames dancing in a fireplace." After World War I started in August 1914, with his brothers and many friends in military service and himself exempted (due to a heart murmur), Duchamp felt uncomfortable in Paris. Meanwhile, "Nude Descending a Staircase No. 2" had