The major spring auctions in New York are still more than a month away, but clues are starting to emerge about potential heavyweights. Earlier this week, Christie’s said that it plans to ask around $40 million for the 90-work estate of former Goldman Sachs chairman John Whitehead on May 4-5, including Impressionist and modern pieces by Claude Monet and Amedeo Modigliani.

On Friday, Sotheby’s said it plans to seek even more—around $50 million—on May 12.