Three United Nations commemorative souvenir sheets titled 'UN 50th Anniversary' issued by UN Postal Administration 2 are error sheets

These souvenir sheets were issued in 1995 to commemorate the 50th anniversary of the United Nations, featuring artwork depicting the diverse peoples and nations that comprise the UN. The sheets were simultaneously released by the three UN postal administrations in New York, Geneva, and Vienna, each with slightly different denominations but identical designs. Such UN commemorative stamps and souvenir sheets appeal to philatelists specializing in topical collecting, particularly those focused on international organizations, peace themes, and modern postal history. These items are valued by stamp collectors worldwide for their historical significance, attractive multi-figure artwork, and their representation of a major milestone in international cooperation and diplomacy.