| The 1831 sovereign was issued in a plain edged proof format. The regular issue began in 1834. The 1834 half sovereigns have an 18mm diameter. The diameter of the 1835,1836 and 1837 coins were enlarged to the more traditional 19mm. The bust was designed by William Wyon, and the new wreath reverse was designed by Jean Baptiste Merlen. The obverse features the portrait of king William IV with the words GULIELMUS IIII D: G: BRITANNIAR REX F: D: The reverse features House of Hanover coat of arms shield and crown above.ANNO ("In the year of (Our) Lord") and the date below. 1831&1834 Gold, 4 grams, 18mm Diameter. 1835-1837 Gold, 4 grams, 19mm Diameter. |
| WILLIAM IV HALF SOVEREIGN 1831-1837 |
| William IV Half Sovereign 1831-1837 |
