The 28 most valuable works the couple collected were offered in a live auction on Wednesday; a timed online sale of another 347 lots will end on Thursday.The 28 most valuable works the couple collected were offered in a live auction on Wednesday; a timed online sale of another 347 lots will end on Thursday.Read MoreArt, Auctions, Sotheby’s, Christo, Jeanne-Claude, Paris (France)
