This is a First Day Issue Envelope and Stamps Saluting United States Space Achievements. The envelope measures 3.625" high by 6.5" wide and has four Saluting United States Space Achievements stamps, which have been postmarked Kennedy Space Center Sept. 29 1967 FL. The envelope shows black and white illustrations for the first trouble-free space walk with an astronaut in space, a rocket blasting off, and a satellite on a planet's surface. The four stamps come from the upper left-hand corner of plate block 29312. Both the envelope and the stamp say "First Day of Issue." This First Day Issue Envelope and Stamps Saluting United States Space Achievements is in very good condition.