Commemorative proof cards each feature a stamp from US #2991.
Fleetwood cover set celebrates 11th International Botanical Congress (1969).
For more than 75 years, the UN has worked toward international peace.
Consular Service Fee Stamps. Missing From Many Collections. Get Yours Today!
There were six issues of these between 1906 and 1955. They were not supposed to be available to the public unused, though a small number have gotten into collectors' hands.