Sotheby’s will auction 12 Impressionist and post-Impressionist works from the Blaquier-Arrieta collection in New York on November 18, with total proceeds expected to reach around $450 million. The sale is led by Vincent van Gogh’s "Chataigniers en fleurs," estimated at about $180 million, and Paul Cézanne’s "Arlequin," estimated at around $120 million. Both works have been absent from public view for decades and are expected to challenge auction records for their artists. Five paintings, including Cézanne’s "Arlequin" and Claude Monet’s "Le Jardin des Tuileries," were unveiled at Sotheby’s in London, while the rest are being shown digitally before traveling to galleries worldwide. Most of the collection was acquired in London during the 1970s by Carlos Pedro Blaquier and Nelly Arrieta de Blaquier.