This is a beautiful sheet of 6 stamps, issued by Comoros Islands in 2008, featuring famous entomologists and butterflies. Included on the stamps are American entomologist Nathan Banks, paleontologist & geologist Louis Agassiz, English naturalist Henry Walter Bates, Swedish entomologist Per Olof Christopher Aurivillius, entomology researcher John Henry Comstock, and French entomologist & author Jean Henri Fabre, along with the Mourning Cloak, Lesser Purple Emperor, Brimstone Butterfly, Peppered Moth, Apollo Butterfly, and the Sycamore. The sheet is Post Office fresh, mint never hinged, and F/VF.