http://www.legislation.gov.uk/ukpga/1973/36/schedule/2/paragraph/12/1991-02-01Northern Ireland Constitution Act 1973An Act to make new provision for the government of Northern Ireland.texttext/xmlenStatute Law Database2017-10-151991-02-01 SCHEDULESSCHEDULE 2 Excepted Matters12Coinage, legal tender and bank notes.