The 1821 Crown obverse features the laureate head of King George IV facing left, with the surrounding legend: 'GEORGIUS IIII D: G: BRITANNIAR: REX F: D:'. The UK 1821 Crown reverse image of St George, the patron saint of England, on horseback, slaying the dragon. With the date 1821 below.The 1821 crown was worth five shillings (a shilling being 12 pre-decimal pence) or one quarter of a pound. The 1821 British crown, the successor to the English crown and the Scottish dollar, came into being with the union of the kingdoms of England and Scotland.