This is a beautiful set of 7 stamps plus souvenir sheet, issued in 1979, displaying space missions. Featured space programs include the Soviet Union's Lunokhod 2 lunar rover on the moon, the Venera 6 Soviet spacecraft, the Apollo 15 lunar rover, the Luna 1, Luna 2, & Luna 3 space probes, the Viking 2 mission to the planet Mars, the Mariner 5 spacecraft on the planet Venus, the Mars 3 mission, and NASA's Apollo 11 mission to the moon. The stamps are Scott catalog #C121-8, and is fresh, mint never hinged, and F/VF.