From Sotheby’s web:
“In a moment that caught the art world by surprise, Banksy’s Girl with Balloon self-destructed just as the final hammer signaled the end of an evening of auctions in London. The work sold for £1,042,000 ($1.4 million), tying the artist’s record in pounds at auction previously achieved in 2008.
The framed work, spray paint and acrylic on canvas, mounted on board depicted a girl reaching out toward a bright red, heart shaped balloon – one of Banksy’s most iconic images – began to pass through a shredder hidden in the frame.”
Photo: Banksy’s Instagram