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The reverse shows a royal shield of arms, encircled by a garter and a collar with a crown above. The design is attributed to Thomas Wyon the Younger and features a legend that reads 'BRITANNIARUM REX FID: DEF:'.
1816 Halfcrowns feature Benedetto Pistrucci's controversial 'Bull Head' portrait of King George III. The bulbous laureate bust is surrounded by an inscription that reads 'GEORGIUS III DEI GRATIA' and the date is shown below.
Halfcrowns were not struck in the early part of King George III's reign, but the denomination was reintroduced following the Great Recoinage of 1816, which marked a major overhaul of British currency.
George III new coinage Halfcrowns are lighter than earlier issues, originally struck by the Royal Mint in 14.14 grams of .925 sterling silver. 1816 Halfcrowns feature a milled edge and measure 32 millimetres in diameter and have a medallic alignment.
1816-dated Halfcrowns were not issued until 1817, so published mintage figures for the two years are combined at 8,092,656. These historic coins were struck at a new mint on Tower Hill, opposite the Tower of London.