This is a beautiful sheet of 4 stamps, issued by Guinea in 2011 as part of the History of Art Series, depicting Post-Impressionist Art. It features art by Paul Gauguin, Edouard Vuillard, Paul Cezanne, Vincent van Gogh, Paul Signac, and Henri de Toulouse-Lautrec. The sheet is Post Office fresh, mint never hinged, and F/VF.