A closeup from the portrait that a Swiss foundation says is an early "Mona Lisa" by Leonard Da Vinci. Denis Balibouse/Landov hide caption

toggle caption Denis Balibouse/Landov

Listen to Elizabeth Blair's report

  • Download
  • <iframe src="https://www.npr.org/player/embed/161882519/161912549" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript