This is a beautiful sheet of 4 stamps, issued by Guinea-Bissau in 2011, depicting butterflies, including the Phila Nippon '11 logo. The butterflies shown include the Inachis io, Moduza procris undifragus, Greta Oto, Papilio Polytes, Atrophaneura hector, Cithaerias phantoma, Papilio machaon, and Delias eucharis. The sheet is Michel catalog #5429-32, and is Post Office fresh, mint never hinged, and F/VF.