County Armagh has never received a grant of arms. Traditionally the reputed arms of the City of Armagh were used. These were a blue shield bearing a gold harp (the arms of Ireland). It has been suggested that Armagh used these arms as it is the ecclesiastical capital of Ireland. Sometimes the field of the arms has been depicted as green, identical to the arms of the Province of Leinster. These arms have appeared upon Northern Ireland bank notes representing the county. /Wikipedia/