So I've read here that CGC will accept posters for grading provided that they "must fit within the following dimensions: 22.5" wide x 29.5" high" (see here). However the language used in the description of what's acceptable seems to restrict the types of posters to those originating "from five of the most highly coveted vintage poster series, including Bill Graham, Family Dog, Grande Ballroom, Neon Rose and Vulcan Gas Company, as well as posters featured in the Art of Rock" and for modern posters those originating via "Bill Graham Presents, New Fillmore and MoonAlice" (see here). Will CGC accept 11x17 film or tv posters signed by celebrities?