A spokesman for the auctioneers said: "Banksy hasn't said they are fake. I don't know why he's not authenticated them... He's saying that street art should stay on the streets."
On its website, Pest Control said that since its creation in January, 89 street pieces and 137 screen prints attributed to Banksy had turned out to be fake.
"Pest Control does not authenticate street pieces because Banksy prefers street work to remain in situ and building owners tend to become irate when their doors go missing because of a stencil," Pest Control said.(Pest Control is the official organisation with authority to authenticate Banksy artwork, which was established in response to a spate of fake Banksys. Not to be confused with Vermin, an unauthorised organisation which vouched for the authenticity of the artworks being sold.)
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