||All graffiti was applied with a small knife, according to Collector's notes. The "11" was at first thought to be the number who died at the hands of British soldiers at a civil rights march in the Bogside, Derry known as Bloody Sunday, January 30, 1972. Later, when the official total was placed at 13, the number was scratched on the reverse of the coin. The defacement consists of a bunch of heavy scratches over the Queen's face. Acquired from a customer in a bar in Derry, Co. Londonderry, May 3, 1972.