This is a beautiful sheet of 6 stamps, issued by Comoros in 2009, commemorating the 2008 Nobel Prize winners including Harald zur Hausen for Physiology or Medicine , Françoise Barre-Sinoussi for Medicine, Makoto Kobayashi, Toshihide Maskawa and Yoichiro Nambu for Physics, Martti Ahtisaari for Peace, and Nobel Prize founder Alfred Nobel. The sheet is Michel catalog #2266-71, and is Post Office fresh, mint never hinged, and F/VF.