This is a beautiful stamp souvenir sheet, issued by Guinea in 2007, commemorating the 200th anniversary of the Kremlin Armoury Musem in Moscow. Featured on the sheet are the Sputnik 1 satellite, the Soviet space dog Laika, a tribute to the 5th anniversary of the European Space Agency's INTEGRAL satellite mission, and Soviet rocket engineer Sergey Korolyov. The sheet is Post Office fresh, mint never hinged, and F/VF.