Up for sale is a 1820 Great Britain 1 Shilling Silver (92.5%) Coin – George III KM#666. This coin has been circulated and is made of silver with a fineness of 0.925. It features George III on the front and the coat of arms of England on the back. The coin is ungraded and uncertified. It is a great addition to any coin collection and a piece of British history.