1959 10th Anniversary of NATO

A short set issued in 1959 by members to commemorate the 10th anniversary of the North Atlantic Treaty Organization (NATO) / Organisation du traité de l’Atlantique nord (OTAN) was established by the signing of the North Atlantic Treaty on 4 April 1949 by Belgium, Canada, Denmark, France, Iceland, Italy, Luxembourg, the Netherlands, Norway, Portugal, the United Kingdom, and the United States. Greece and Turkey joined in 1952.

See the collection: https://dicksstamps.online/collections/1959-10th-anniversary-of-nato/