The sovereign is a gold coin of the United Kingdom, with a nominal value of one pound sterling. Struck from 1817 until the present time, it was originally a circulating coin (see pre-decimal Sovereign) accepted in Britain and elsewhere in the world; it is now a bullion coin not intended for circulation, the intrinsic value of which is much higher than its face value.
In most recent years, it has borne on the reverse Benedetto Pistrucci's design of Saint George and the Dragon, created in 1817. Occasionally, the Royal Mint also releases one-year types with different designs, as a celebration for major events (usually Royal in nature).
There are several denominations of the Sovereign: Five Sovereigns (Quintuple Sovereign, five pounds gold), Double Sovereign, Full Sovereign, Half Sovereign and Quarter Sovereign; the current double sovereign - with face value of £2 is a continuation of the pre-decimal double sovereign, and has been issued as a decimal coin since 1974.
The designs of all denominations are identical, as - according to tradition - this type of coin has never had its value and denomination spelled out anywhere on the coin. The various denominations are only distinguished by size and weight, these being exactly in proportion to their face value. Since 1817, the composition has always been 22 carat (91.67%) gold.
The 2002 double sovereign coins honour the Golden Jubilee (50th anniversary of the accession to the throne) of Queen Elizabeth II by reviving a modern version of a coin design last seen on half sovereigns of Queen Victoria in 1893. Instead of the renowned Benedetto Pistrucci engraving of St. George and the Dragon, the reverse of all 2002 gold sovereign denominations carries the Royal Coat of Arms for only the second time in 115 years. The only previous occasion was for the 500th anniversary of the sovereign coin in 1989.
The double sovereign was only issued in Proof FDC grade this year, in mint sets and not individually. | 
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