A British businessman has discovered what could be the earliest piece of Andy Warhol's "Pop Art" ever found.

An art expert told the U.K.'s ITN that the $5 bargain could be worth millions, if it's authenticated.

Channel 4 News in the U.K. reported that the painting was bought by Andy Fields, of Devon, in Las Vegas, from a drug user whose aunt cared for Warhol as a child. It said the picture had been valued at more than $2 million.

Warhol was supposed to have made the work when he was just 10 or 11 in the 1930s, Channel 4 said.

NBC News partner ITN in London contributed to this report.

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