This is a beautiful sheet of 6 stamps, issued by Guinea in 2011, commemorating the 150th anniversary of the birth of famous Norwegian Nobel Peace Prize-winning explorer and scientist Fridtjof Nansen. Also featured on the sheet are the Snowy Owl, Polar Bear, Anglo-Irish explorer during the "Heroic Age of Antarctic Exploration" Sir Ernest Henry Shackleton, Razorbill Seabird, American North Pole explorer & physician Frederick Cook, Cackling Goose, Norwegian polar explorer Eivind Astrup, Bearded Seal, Captain Robert Falcon Scott of the Royal Navy, and the Arctic Fox. The sheet is Michel catalog #8367-72, and is Post Office fresh, mint never hinged, and F/VF.