Vintage 1 7/8" tall poster stamp. These are circa 1940 and say "Charity Football Stadium Nov. 25". These advertised charity football games that were in Cleveland, Ohio and are ungummed (none in the series were gummed). Poster (also called Cinderella) stamps were issued as advertising, but not for postal purposes. Most of them, like these, are larger than regular stamps. They are widely collected. These are in excellent unused condition and are uncommon.