The four world’s most expensive paintings (valued or sold), with a total value of US$1.5533 billion, are here superimposed as one image: Da Vinci’s “Mona Lisa”, estimated at $620 Million, Da Vinci’s “Salvator Mundi”, sold for $450 Million, de Kooning’s “Interchange”, sold for $270 Million, and Gauguin’s “When will you marry?”, sold for $213 Million.