An American artist paid $ 730,000 (£ 561,000) for Banksy's artwork, which was painted on the Northland side of the pendulum – then robbed it.
The slave work on a sewing machine portrays a baby on his knees, creating a series of Union Jackets lace.
In 2012, it was written in a Wood Green store and is believed to be a protest against the sports medicine used to produce London Olympic souvenirs.
This is a blow to the street art. It should not be bought and sold
The slave work was sold on Julian's auction in Los Angeles on Wednesday, and was bought by an American artist Ron English Waltz, who revealed that he was planning to shell it off in protest against the street art that was bought and sold.
He told the Press Association: "My idea of this painting is to call it my good salary to Banksy, I just want me to spend more on it.
"I'm going to paint it white again, I've done it. It's a street art blow. It should not be bought and sold.
"I'm going to paint over it and simply add it to one of the walls in my house. We're tired of people who steal their belongings to the streets and sell them further, so I'm just going to buy everything I can find out and mitigate."
The painting sold for $ 600,000, as well as the buyer's premium, which resulted in Jayeen Auction fairs Darren Ellen, which amounted to $ 730,000.
The Englishman, who said that he spent time in Palestine with Banksy, added: "Then I want to sell a white painting for a million dollars. I'm crazy, but I'm not stupid."
In October, the Banksy piece sold in London partly crushed itself after the hammer came down.
A girl with a balloon, one of the most famous works of the most mysterious artist, was sold for GBP 1.04 million before the canvas went through a shredder mounted on the frame.
Subsequently, the buyer confirmed that they are being sold.