The United Kingdom, known in philatelic circles as "Great Britain", released many commemorative stamps (postage stamps issued to honour or commemorate a place, event or person) in the 1970s.
The first adhesive postage stamp, the Penny Black, was introduced in the UK on 6 May 1840.
Until 1924, all British stamps only showed the reigning monarch's portrait, except for the 1913 "Sea Horses" design.
The first commemorative stamp was issued in 1924 for the British Empire Exhibition, and since the mid-1960s, six to nine sets of commemorative stamps are released each year.
PHQ cards, postcard-sized reproductions of commemorative stamps, have also been issued since the mid-1970s.