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In page Eric Hebborn:

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Colnaghi waited a full eighteen months before revealing the deception to the media, and even then never mentioned Hebborn's name, for fear of a libel suit. Alice Beckett states that she was told '...no one talks about him...The trouble is he's too good'.[3] Thus Hebborn continued to create his forgeries, changing his style slightly to avoid any further unmasking, and manufactured at least 500 more drawings between 1978 and 1988.[4] The profit made from his forgeries is estimated to be more than 30 million dollars.[5]