Artwork by Gustav Klimt, "Portrait of Elisabeth Lederer," became the most valuable work of modern art to ever sell at auction, reaching $236.4 million to gasps and applause from the room during the 20-minute bidding war at Sotheby's first sale out of its new US headquarters in New York. It was also the most expensive work of art ever sold by the auction house globally. Read more: https://cnn.it/3LNQeBJ | CNN