This is a beautiful sheet of 4 stamps, issued by Guinea-Bissau in 2009, displaying the game of chess from around the world. Featured on the stamps are chess pieces from 760 AD Afrasiab, Uzbekistan, 1800 Spain, 1831 Isle of Lewis, Scotland, and 1100 Salerno, Italy. The sheet is Post Office fresh, mint never hinged, and F/VF.