" Crap Artist " (Italian Merda d'artista) - a work of art by Italian artist Piero Manzoni , a representative of conceptualism.
In May 1961, Manzoni collected own feces in 90 numbered canning jars , each of which contained 30 grams written on them "100%natural -e artist shit " in Italian, English , French and German, and sold them at a price equal gold price of the same mass. Current price is around 30,500 euros. May 23, 2007 a copy was sold for 124,000 euros at auction , " Sotheby's ".
Manzoni claimed that his project , he draws attention to the credulity of buyers of works of art. " All these Milanese bourgeois pigs only like shit " - said the artist.

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Demand creates supply.