This 2000 Spanning the Millennia 5 pounds coin cover is a dual dated Millennium first day cover by Mercury Covers. It celebrates the arrival of the new millennium and hosts a brilliant uncirculated 5 pounds coin issued by the Royal Mint. The coin shows both years 1999 and 2000 with the inscription Anno Domini. The Royal Mail stamp cachet is postmark cancelled showing 31st December 1999 and 1st January 2000 Greenwich London.