Webb P81 (old # P35) 2c Blue Admiral U.P.U., used in period April 15, 1914 from Montreal to Hamburg Germany. Cat $250, unique in that an illustration of a ship has been skillfully attached to the back and it went through the mail undetected. The ship is the Nieuw – Amsterdam. According to Wikipedia “in 1914, the ship brought almost 1,700 United States citizens back from Europe at the outbreak of World War I”