Belgium - 50 Euro gold Proof, L Oiseau bleu, Maurice Maeterlinck, 2008

L'Oiseau bleu (The Blue Bird) is a 1908 play by Maurice Maeterlinck (1862-1949). It premiered on 30 September 1908 at Constantin Stanislavski's Moscow Art Theatre and has been turned into several films and a TV series. The story is about a girl called Mytyl and her brother Tyltyl seeking happiness, represented by The Blue Bird of Happiness, aided by the good fairy Berylune.