Effigy of the ruling British monarch, legend in Latin. During the existence of this coin type, half pennies were issued for: King George IV (1825 - 1827), King William IV (1831 - 1837) and Queen Victoria (1838 - 1860).
Figure of Britannia seated facing right, resting her right hand on a shield bearing a saltire of arms, and holding a trident in her left hand; around, the rest of the monarch's legend: BRITANNIAR: REX FID: DEF: (King of Britain, Defender of the Faith) during the reigns of King George IV and King William IV, or BRITANNIAR: REG: FID: DEF: (Queen of Britain, Defender of the Faith) for Queen Victoria; in exergue, a rose, a thistle and a shamrock combined.
References to additional information:
[Book] Bressett, Kenneth E. 1962. A Guidebook of English Coins, Nineteenth and Twentieth Centuries. Wisconsin, USA. pp 22-24
[Book] Remick, Jerome. 1971. The Guide Book and Catalogue to British Commonwealth Coins., p197