A former employee’s story of working inside the Sotheby’s auction house:

“Hired as a researcher, I was assigned the task of going through the catalogues raisonnés of the Contemporary Art department’s top-grossing artists—Warhol, Koons, Prince, Richter, Rothko—and determining the whereabouts of every piece that had ever come onto the global market. The Excel spreadsheets I worked on each day (column 1: image, column 2: title, column 3: year, column 4: cataloguing, column 5: present owner) would serve to expedite the future searches of collectors, who might want, say, a big, mostly purple Richter from the mid-’80s. Sometimes a painting was in a museum (the auction houses hate this because it makes the work more or less permanently priceless). Other times, a prominent collector was listed as the work’s owner. Usually, though, I was trying to track down pieces in anonymous private collections. Sometimes a city or country was provided, unhelpfully. Private Collection, France. Or more often than not: Private Collection, Liechtenstein.”