The Fifteen-cent Prexie
Canal Zone airmail usage
The rate for airmail letters to and from the Canal Zone and the continental United States was fifteen cents from December 1, 1937 to April 1, 1945.
This cover was mailed from Washington, D.C. on May 20, 1941 and reached Corozal on May 22.
This cover was sent from Alaska to the Canal Zone in July of 1941. While Alaska was a territory at the time, it used the same postal rates as the continental U.S.
Mailed from a ship stationed at Balboa, Canal Zone, in 1940, the sender paid the fifteen-cent airmail rate to the continental United States.