The Royal Mail celebrates The Queen's 90th birthday with the release of a photograph featuring four generations of the Royal Family. The image will appear on a special commemorative Stamp Sheet.
The Royal Mail celebrates its own 500th anniversary this year.
(In Portugal, the Correio-mor do Reino was founded in 1520 by King D. Manuel I. In 1799 it became a full state enterprise, Between 1520 and 1799 it was a public service rented to private companies)