The Post Office Department issued the first 20-cent Franklin stamp in April 1914. By its last printing, the 20-cent Franklin had gone through four renditions. A variety of papers, coils, watermarks, and perforations differentiate the versions.
Patrons often used the 20-cent stamp to pay the four times weight of the Universal Postal Union international rate. They also used it with other denominations to fulfill large weight and foreign destination rates. By the time the last 20-cent Franklin stamps were sold, more than 466 million had been issued.