This is a beautiful sheet of 4 stamps, issued by Togo in 2010, displaying dirigibles. Featured airships shown include Brazilian aviation pioneer Alberto Santos-Dumont's 1903 No.9 airship, the 1900 Zeppelin LZ1 German experimental airship, the Patrie military airship from French sugar magnates Paul and Pierre Lebaudy, and Alberto Santos Dumont's No. 6 airship from 1901. The sheet is Yvert&Tellier catalog #2312-5, and is Post Office fresh, mint never hinged, and F/VF.