The Great Britain Britannia Gold Bullion coin is a gold bullion coin produced by Great Britain. The Great Britain Britannia Gold Bullion coin is issued by the Royal Mint. The Great Britain Britannia Gold Bullion coin has been in production since 1987.
The Great Britain Britannia Gold Bullion coin is available in a wide variety of sizes: the 1/10 ounce Great Britain Britannia Gold Bullion coin, the 1/4 ounce Great Britain Britannia Gold Bullion coin, the 1/2 ounce Great Britain Britannia Gold Bullion coin, and the 1 ounce Great Britain Britannia Gold Bullion coin.
Great Britain Britannia Gold Bullion coin is issued as currency, and thus each coin has a corresponding value in Great British Pounds. The 1/10 ounce Great Britain Britannia Gold Bullion coin has a value of 10 Great British Pounds, the 1/4 ounce Great Britain Britannia Gold Bullion coin has a value of 25 Great British Pounds, the 1/2 ounce Great Britain Britannia Gold Bullion coin has a value of 50 Great British Pounds, and the 1 ounce Great Britain Britannia Gold Bullion coin has a value of 100 Great British Pounds. Like most, if not all gold bullion issued as currency by a government, the Great Britain Britannia Gold Bullion coin has much more intrinsic gold value than its face value.
The fineness of the Great Britain Britannia Gold Bullion coin has changed a few times over the years. Starting in 2013, all Great Britain Britannia Gold Bullion coins produced are .9999, or 24 karat gold. From 1990 to 2012 the Great Britain Britannia Gold Bullion coin was produced in .917 or 22 karat gold, with the remaining alloy being silver. From 1987 to 1989 the Great Britain Britannia Gold Bullion coin was also produced in .917 or 22 karat gold, but the remaining alloy on those Great Britain Britannia Gold Bullion coin was copper instead of the silver of later coins.
Due to the change in gold fineness and other design factors, in 2013 the diameter of the 1 ounce Great Britain Britannia Gold Bullion coin changed from 32.69 millimeters to 38.61 millimeters. The obverse of the Great Britain Britannia Gold Bullion coin features Queen Elizabeth, and also features the Great Britain Britannia Gold Bullion coins currency denomination. The reverse of the Great Britain Britannia Gold Bullion coin features a likeness of Britannia, and also has both the gold content and the year of the production.