The 2010 British Banknotes GP £5 White Fiver Banknote 50mm Proof Coin is a commemorative coin made in the United Kingdom. This collectible coin features a design sourced from Great Britain, with a white colour and a diameter of 50mm. It comes with a Certificate of Authenticity (COA) adding to its value as a rare and sought-after piece for coin collectors interested in British memorabilia from the 2000s.