Revenue stamps of Northern Ireland
Upon the partition of Ireland in 1921, separate revenue stamps began to be issued for both Northern Ireland and Southern Ireland. The latter were withdrawn soon afterwards upon the establishment of the Provisional Government, but the former continued to issue revenue stamps until the late 20th century. The need for separate issues for Northern Ireland came about since taxes raised there were meant to remain in the country. Most Northern Irish revenue stamps were British key types with appropriate inscriptions, but there were a number of different issues as well.
History of rail transport in Ireland
In 1875, the D&D and the D&BJct merged to form the "Northern Railway of Ireland" and thirteen months later the Great Northern Railway (Ireland) (GNR(I)) was formed when the Ulster Railway and the INWR joined this concern. Other minor railways were subsequently taken over. At its height, in the thirty or so years prior to World War I, the GNR(I) covered a large area of Ireland between Dublin, Belfast, Derry and Bundoran. By the end of World War II the company was in dire straits. It struggled on until 1953 when it was nationalised by the two Governments, becoming the Great Northern Railway Board.