Andy Warhol, ‘Stephen Mazoh’, ca. 1974, Alpha 137 Gallery

This historic work is an original photographic, positive acetate that came directly from Andy Warhol's studio, The Factory. This is the work that Warhol used for his portrait painting of the art dealer Stephen Mazoh. The painting is part of the New York Metropolitan Museum of Art's permanent collection.
For your reference only, here is a link to the record for that painting:

As Bob Colacello, former Editor in Chief of Interview magazine (and right hand man to Andy Warhol), explained, "many hands were involved in the rather mechanical silkscreening process...but only Andy in all the years I knew him, worked on the acetates." An acetate is a photographic negative transferred to a transparency, allowing an image to be magnified and projected onto a screen. As only Andy worked on the acetates, it was the last original step prior to the screenprinting of an image, and the most important element in Warhol's creative process for silkscreening. Warhol realized the value of his unique original acetates like this one, and is known to have traded the acetates for valuable services, allowing the printing companies to make additional silkscreens of his work.
This acetate was unevenly cut by Warhol himself.

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About Andy Warhol

Obsessed with celebrity, consumer culture, and mechanical (re)production, Pop artist Andy Warhol created some of the most iconic images of the 20th century. As famous for his quips as for his art—he variously mused that “art is what you can get away with” and “everyone will be famous for 15 minutes”—Warhol drew widely from popular culture and everyday subject matter, creating works like his 32 Campbell's Soup Cans (1962), Brillo pad box sculptures, and portraits of Marilyn Monroe, using the medium of silk-screen printmaking to achieve his characteristic hard edges and flat areas of color. Known for his cultivation of celebrity, Factory studio (a radical social and creative melting pot), and avant-garde films like Chelsea Girls (1966), Warhol was also a mentor to artists like Keith Haring and Jean-Michel Basquiat. His Pop sensibility is now standard practice, taken up by major contemporary artists Richard Prince, Takashi Murakami, and Jeff Koons, among countless others.

American, 1928-1987, Pittsburgh, PA, United States, based in New York, NY, United States