As Gold often did, this lot shows how one of his premium concepts was in development for more than one company at any given time. 9x11" sheet of vellum w/black pencil original art for cereal box back advertising "Lucky Charms Yo-Yo" w/Lucky the Leprechaun using toy w/his likeness. Exc. Comes w/"Creative Dummy Specifications" sheet dated "2-19-70". Top sheet is filled out in ink and has lead pencil original art at center w/attached stats of yo-yo's cardboard inserts (which have been glued to sheet, causing some aging). VF. Also comes w/two other vellum sheets w/pencil original art; one showing technical schematics while other shows another design for insert. Both are Exc. Lot also included printed sample color design. Smaller vellum sheet features mixed media full color original art for "Cap'n Crunch Yo-Ho Yo-Yo" inserts. Unique. Comes w/a few stats of the art. From the archives of premium creators Sam & Gordon Gold and comes with LOA.