This is a beautiful sheet of 4 stamps, issued by St. Thomas & Prince Islands in 2009, commemorating NASA's Lunar Precursor Robotic Program from June 2009. Featured are the Lunar Reconnaissance Orbiter spacecraft, the Lunar Crater Observation and Sensing Satellite, the Lunokhod 1 lunar rover, the Japanese Hiten spacecraft, and the Apollo 15 mission to the moon. The sheet is Post Office fresh, mint never hinged, and F/VF.