Wilding series
The Wildings were a series of definitive postage and revenue stamps featuring the Dorothy Wilding photographic portrait of Queen Elizabeth II that were in use from December 1952 (they were the first UK stamps issued during her reign) until decimalisation in 1971. The Wildings were the first and only British stamps to feature graphite lines on the back, and the first to feature phosphor bands on the face – both aids to automation. The stamps were also the first British pictorial high value stamps and the first to include regional emblems.