This full set of 7 Mint Singles Airmail stamps from the 1940's Transport Plane is a must-have for any aviation enthusiast. With a denomination of 20 cents and a year of issue ranging from 1941-1950, these stamps showcase the history and artistry of United States aviation. The multi-color stamps are in XF/S (Extremely Fine/Superb) grade and have not been hinged or certified, making them a unique addition to any collection. The back of book category for these stamps is United States and they are uncertified. Add this rare and unique set of stamps to your collection today!