As anticipation of the upcoming fall auction season continues to build, Sotheby’s has announced that it will offer the illustrious Schlumberger Collection during its Evening and Day Sales of Impressionist & Modern Art and Contemporary Art on November 4-5 and November 11-12, respectively. The collection, which brings together over ninety modern and contemporary masterworks from the twentieth century, is expected to fetch over $85 million.

Pierre Schlumberger, an aristocratic French oil-industry tycoon, and his beautiful Portuguese wife, São, are considered two of the most visionary collectors of the twentieth century.