The product is a set of two United Nations First Day Covers (FDC) honoring the first air mail stamped envelope. The covers were issued between 1951-1960 in New York, United States, with a denomination of 7 cents. The cancellation type is First Day of Issue. The stamps are in a Mint Never Hinged/MNH quality and have a Very Fine grade. The color is Multi-Color and the topic is First Stamp Air Mail. The certification is Uncertified.