A scarce commemorative cover for the Assassination of Archduke Franz Ferdinand, the accepted incident that initiated World War I. The cover bears GB Royal Mail, British Legion commem. issue with official Royal Mail postmark inscribed: Outbreak of World War I 1914 1918 Westminster Abbey dated 1/1/2014. Additionally the cover also bears Austro Hungarian military stamp with blue cachet Bosnien Herzegowina Franz Ferdinand 1914 2014 Sarajevo. The scarce cover was a severely restricted issue of only 75 covers and hard to locate.