The double sovereign is a gold coin of the United Kingdom with a nominal value of two pounds sterling. Rarely issued in the first 150 years after its debut in 1820, it never had a significant presence
Proof 1991 double sovereign with box of issue and certificate of authenticity
The half sovereign is a British gold coin denominated at one-half of a pound sterling. First issued in its present form in 1817, it has been struck by the Royal Mint in most years since 1980 as a coll
1983 half sovereign obverse
1983 half sovereign reverse
With war beginning in 1914, half sovereigns in British commerce were replaced by treasury notes.
Benedetto Pistrucci's original sketch was the basis of both the 1817 sovereign and the 2017 sovereign series, including the half sovereign.