This 2001 Queen Elizabeth II 75th birthday 5 crowns coin cover is a Gibraltar first day cover by Mercury. It celebrates Her Majesty The Queen's 75th birthday and hosts a Turks & Caicos Islands 5 crown coin and stamps showing Her Majesty on her wedding day. Cancelled postmark HM Queen Elizabeth II's 75th Birthday 21st April 2001 Gibraltar Issued 20th April-04-2001.