Keywords: FIPEX 11c 1956 issue U.S. souvenir sheet.jpg en Fifth International Philatelic Exhibition FIPEX 11-cent 1956 issue U S souvenir sheet featuring oversized reproductions of two stamps 3-cent and 8-cent in the Liberty Series FIPEX took place in New York City from April 28 through May 6 1956 1956-04-28 U S Postal Service; National Postal Museum http //arago si edu/category_2029274 html Fifth International Philatelic Exhibition Issues Bureau of Engraving and Printing other versions PD-USGov Stamps of the United States 1951-1960 Commemorative stamps of the United States 1956 stamps of the United States Miniature sheet Stamp exhibitions on stamps Statue of Liberty on stamps |