the sixth one,

The Annunciation

 
 Leonardo  created 'the  Annunciation'   around 1480/1481 it is  now shown  in  the Louvre. It's a lovely small  painting  with a deep and misty landscape and also the flowers in the foreground are typical of Leonardo. Beside this Annunciation there exists another one, which is now in Florence. The annunciation from Florence is usually ascribed to Leonardo, but the most scientifically facts indicate, that it is from Lorenzo di Credi, who worked with   Leonardo in the workshop of Andrea del Verrocchio.