A man stands in front of Pablo Picasso’s ‘Pomme’, which will feature in the upcoming May 7-11 New York sale of the collection of Peggy and David Rockefeller, at their premises in London, Tuesday, Feb. 20, 2018. The painting is estimated to fetch $1 million to 1.5million (700,000 to 1.07 million pounds, 800,000 to 1.2 million euro). The art collection amassed by billionaire David Rockefeller could raise more than $500 million for charity when it is auctioned this spring. (AP Photo/Matt Dunham)
People talk in front of Henri Matisse’s ‘Odalisque couchee aux magnolias’, which will feature in the upcoming May 7-11 New York sale of the collection of Peggy and David Rockefeller, at their premises in London, Tuesday, Feb. 20, 2018. The painting is estimated to fetch in the region of $50 million (36 million pounds, 40.5 million euro). The art collection amassed by billionaire David Rockefeller could raise more than $500 million for charity when it is auctioned this spring. (AP Photo/Matt Dunham)
A member of Christie’s London auction house staff prepares to pose for photographs with Pablo Picasso’s ‘Fillette a la corbeille fleurie’, which will feature in the upcoming May 7-11 New York sale of the collection of Peggy and David Rockefeller, at their premises in London, Tuesday, Feb. 20, 2018. The Monet is estimated to fetch $90 million to 120 million (65 million to 85 million pounds, 73 million to 97 million euro). The art collection amassed by billionaire David Rockefeller could raise more than $500 million for charity when it is auctioned this spring. (AP Photo/Matt Dunham)
Christie’s London auction house staff pose for photographs with Pablo Picasso’s ‘Fillette a la corbeille fleurie’, which will feature in the upcoming May 7-11 New York sale of the collection of Peggy and David Rockefeller, at their premises in London, Tuesday, Feb. 20, 2018. The Monet is estimated to fetch $90 million to 120 million (65 million to 85 million pounds, 73 million to 97 million euro). The art collection amassed by billionaire David Rockefeller could raise more than $500 million for charity when it is auctioned this spring. (AP Photo/Matt Dunham)
Christie’s London auction house staff pose for photographs with Claude Monet’s ‘Nympheas en fleur’, which will feature in the upcoming May 7-11 New York sale of the collection of Peggy and David Rockefeller, at their premises in London, Tuesday, Feb. 20, 2018. The painting is estimated to fetch $50 million-$70 million (35.7 million to 50 million pounds, 40.5million to 56.7 million euro). The art collection amassed by billionaire David Rockefeller could raise more than $500 million for charity when it is auctioned this spring. (AP Photo/Matt Dunham)
Christie’s London auction house staff pose for photographs with Georges Seurat’s ‘La rade de Grandcamp (Le port de Grandcamp)’, left, and Claude Monet’s ‘Exterior de la Gare Saint-Lazare, effet de soleil’ which will feature in the upcoming May 7-11 New York sale of the collection of Peggy and David Rockefeller, at their premises in London, Tuesday, Feb. 20, 2018. The art collection amassed by billionaire David Rockefeller could raise more than $500 million for charity when it is auctioned this spring. (AP Photo/Matt Dunham)
LONDON (AP) — An art collection amassed by billionaire David Rockefeller could raise more