Bank of England 10s note longer and narrower, and were the first ten-shilling notes to feature a portrait of Queen Elizabeth II on the front. The reverse design incorporated the logo of the Bank of England. In the late 1960s it was decided that future banknotes should feature a British historical figure on the reverse. The first such note was the series D £20 note, first issued in 1970, featuring William Shakespeare. A design for a ten-shilling note featuring Walter Raleigh on the reverse was approved in 1964 but was never issued. Instead, in 1969, as part of the process of decimalisation, a new fifty
Bank of England 10s note were issued in a new mauve and grey colour scheme in order to deter counterfeiters, although the design remained the same. At the same time, a metallic thread running through the paper was introduced as a security feature. After the war ten-shilling notes were issued in their original red colour. The earliest post-World War II notes did not have the metallic thread security feature, but those issued from October 1948 onward did. A new design for ten-shilling notes was introduced in 1961, with the old notes ceasing to be legal tender in 1962. These new series C notes were slightly