George III 1807 Halfpenny. Engraver: Conrad Heinrich Kuchler, Soho mint type 2.

GEORGIUS III D G REX, 1807 below, laureate, draped bust right.
BRITANNIA, Britannia seated left, holding a trident in her left 
hand and a spray in right; shield of Union Jack at her side.

George III halfpennies were first struck from 1770 to 1775,
then there was a break in striking until 1799. In 1799, 
1806 and 1807 halfpennies were struck in the privately owned 
Soho Mint owned by Matthew Boulton who struck two types: The 
first in 1799 and the second in 1806 and 1807. The second type 
was 29 mm and weighed 9.428 gr.

Courtesy of waldercoins.co.uk