Nicknamed ‘the Prexies’ by collectors the Presidential Issue is a series of definitive postage stamps issued in the United States in 1938. The unique collection features all 29 U.S. presidents from George Washington through Calvin Coolidge. The Presidents are depicted as small busts printed on solid-color designs on stamps valued up to 50-cents. The designs are black on white with colored lettering for the $1, $2, and $5 values. Many irregular values were included simply to ensure so that each Commander-in-Chief had a stamp of his own. Additional stamps depicted Benjamin Franklin on a half-cent stamp, Martha Washington on a one-and-a-half-cent stamp, and the White House, on a stamp with a value of four-and-a-half cents.