Original plaster and casts

Boccioni's assignment was in plaster, and was never casting into brownish in his lifetime; this is on affectation at the Museu de Arte Contemporânea, São Paulo. Two casts were fabricated in 1931 (one is on affectation at the Museum of Modern Art[4]), two were fabricated in 1949 (one is on affectation at the Metropolitan Museum of Art[2]), and in 1972 (one is on affectation at the Tate Modern[7]), and addition eight in 1972 fabricated not from the plaster, but a 1949 cast.