11x17" stiff paper promo from the late 1940s issued to promote the newspaper comic strip. The front of the piece features castle front w/separate diecut drawbridge that has large simulated banner attached to it reading "The Royal Road To Adventure Leads To..." Standing in front of this are two knights, across the moat are two knights on horseback. This "drawbridge" folds open to reveal a 7" tall diecut pop-out figure of Prince Valiant in battle stance, behind him is battle scene of knights. On the back of the drawbridge is an additional simulated banner w/text promoting Hal Foster's character and newspaper strip. Text includes "Once A Week Millions Of Newspaper Readers Leave Behind Them The Complexities Of The 20th Century And Eagerly Escape To The Refreshing Simplicity And High Adventure Of The Days When Knighthood Was In Flower/Prince Valiant Has Been Heralded For Over A Decade As An Outstanding Leader With Readers/Foster Tells The Stories Through Beautiful Painstaking Drawings And In A Prose Style Which Has A Grace And Elegance Unlike Any Other Strip/Perhaps Your Territory Is Still Open-Write Us Now For The Terms On Hal Foster's Exceptional Adventure Page Prince Valiant." Art on the back of the piece depicts different castle view w/yet another banner that includes name of general sales manager F. J. Nicht and address for King Features Syndicate. At the bottom of this is a diecut slot which obviously once held some type of form and/or envelope to be returned to KFS. Lt. margin wear, mostly at corners w/very ft. 3" crease at lower right. VF. Very nicely designed promo, the first we've seen.