This is a beautiful sheet of 6 stamps, issued by Guinea in 2010, commemorating the 2010 launch of the Chinese Chang space probe. Also honored on the stamps are India's Chandrayaan-1 lunar probe, the Chang'e 2 lunar probe from the Chinese Lunar Exploration Program (CLEP), National Aeronautics and Space Administration's (NASA) Lunar Reconnaissance Orbiter (LRO) robotic spacecraft, the Moon mission Lunar Prospector spacecraft, and the European Space Agency's (ESA) SMART-1 satellite, among others. The sheet is Post Office fresh, mint never hinged, and F/VF.