This wonderfully patriotic stamp set follows the design changes of the American flag from Colonial times through the current era. Beginning with the Sons of Liberty flag of 1775 and ending with our modern design, each red, white and blue 33 cent issue includes a title and date on the front. On the back of each is a short description of the version shown. All together these 20 stamps offer a full historical evolution of this most precious symbol of the U.S.A. This uncut sheet remains in Uncirculated Mint condition.