The example illustrated here dates from the coronation of King George V (in 1911), and was supplied by Wilkinson & Son of Hanover Square, London (Royal Collection Trust, RCIN 31793). Comparable forms have been worn since at least the fifteenth century. The sovereign is invested with the Supertunica following the anointing ceremony. It is worn with the Stole Royal and under the Imperial Mantle.
The Supertunica illustrated here was also worn at the coronations of King George VI (12th May 1937) and Queen Elizabeth II (2nd June 1953). The coat is open at the front and has a narrow strip and wider band of foliate embroidery on either side of the front opening. It is lined with red silk. The belt is similarly embroidered.
Royal Collection Trust online catalogue (retrieved 26 June 2016).
GVE