United Nations commemorative first day covers, with diverse themes including atomic energy, Namibian independence, and international cooperation.
The collection includes at least eight different covers, each with original UN postage and matching cancellations from Geneva, Vienna, and other sites. Designs feature various symbolic artwork and themes such as 'Liberation, Justice, Co-operation' for Namibia and 'Utilisation de l'énergie atomique à des fins pacifiques.' A certificate of authenticity from the UN is included, certifying the official status and design provenance of the envelopes. See photos for Measurements if taken.