Coins minted in the Year 1821

What happended in 1821?
The Monarch is George IV, who has his Coronation. Prime Minister is Robert Jenkinson, 2nd Earl of Liverpool (Tory). James Monroe is President of the USA. The New Observer newspaper is launched, later to become The Sunday Times. John Constable completes his famous painting The Hay Wain. The Bank of England returns to the gold standard. The national census shows that almost half of the population is under twenty years old and the population has increased by 18% in a decade.