Vintage original 27 x 40 in. US double-sided advance one-sheet poster from the popular 2000's animated fantasy war thriller, LEGEND OF THE GUARDIANS: THE OWLS OF GA'HOOLE, released in 2010 by Warner Bros. and directed by Zack Snyder. Based on three books from Kathryn Lasky's best-selling series, when a young owl is abducted by an evil Owl army, he must escape with new-found friends and seek the legendary Guardians to stop the menace. This is one of two different advance one-sheet posters (referred to as the "brown" style) that were issued for display in theaters before the film was released. It is also the double-sided version, which was designed for display inside of a light box. The beautiful image depicts the film's main characters with the main character standing near a metal mask. The tag line at the bottom ("Take flight in 3D September 24") indicates that this is one of the advance posters. Unrestored and rolled as originally issued, it is in very fine+ condition without any pinholes, tears, stains, or other flaws.