Like many other mints, the Royal Mint issues bullion coins in precious metals, having much higher intrinsic value than their face value. The one ounce (1 oz) platinum coins are denominated as One Hundred Pounds (£100).
The coins are legal tender, but are not intended for circulation. They are targeted at bullion investors or collectors who appreciate the special editions as pieces of art. The coins are typically "one-year" types usually issued in parallel with other denominations with the same reverse designs.
This platinum one-ounce (1oz) coin coin commemorates the 100th Anniversary of the Outbreak of the First World War.
The reverse design is the same as that of a commemorative £2 issued the same year, the first in a five-year series of coins on a journey from "outbreak to armistice". The coin remembers one of the most significant moments in British history with a design that recalls the spirit, and with hindsight, the poignancy, of the rush to enlist encouraged by Lord Kitchener.
In 1914 Lord Kitchener was appointed to mastermind a recruitment campaign that would go on to create one of the largest volunteer armies ever known in Britain. Though many posters encouraged the men of Britain to enlist, the image of Kitchener himself came to stand for the call to fight for "King and Country" that saw men respond in their thousands. It is to this instantly recognisable image that experienced coinage artist John Bergdahl turned to create his stirring design. | 
Search for United Kingdom: Platinum Ounce 2014 WW1 - Outbreak on eBay 