Signed Little Prince sketch goes to auction

An original watercolor illustration from Antoine de Saint-Exupery's timeless classic The Little Prince, one of the world's best-selling books ever, is to be auctioned in Paris next week.

The signed sketch, which appeared on page 17 of the original 1943 version of the novella, is expected to fetch between 400,000 and 500,000 euros ($500,000-$600,000), according to auction house Artcurial.

The drawing depicts the Turkish astronomer, who discovered the Asteroid B612, the eponymous Little Prince's planet, pointing at a blackboard of equations and mathematical diagrams.