Oil, varnish, lead foil, lead wire, and dust on glass plate mounted between two glass panels "Surely one of the most enigmatic works of art in any museum, The Large Glass dominates a gallery devoted to Marcel Duchamp's work from the exact location in which he placed it in 1954. Painstakingly executed on two planes of glass with unconventional materials such as lead foil, fuse wire, and dust, the appearance of the Glass is the result of an extraordinary combination of chance procedures, carefully plotted perspective studies, and laborious craftsmanship. As for its metaphysical aspect, Duchamp's voluminous preparatory notes, published in 1934, reveal that his "hilarious picture" is intended to diagram the erratic progress of an encounter betw...