I’m not a huge Lichtenstein fan myself, but that doesn’t mean I want to see the guy’s legacy destroyed by a nutjob.

She faces charges of causing grave property damage - a crime that carries a punishment of up to five years in prison.

The woman said she slashed the painting because she believed it was a forgery - a claim denied by the exhibition’s curator, Rudolf Sagmeister.

Mr Sagmeister, who organised the exhibition called Roy Lichtenstein: Classic of the New, said the painting could be restored.

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