See page 241 #AII3 in Anglo-American Ceramics by David and Linda Arman for this plaque.
General Sir Henry Clinton, KB (16 April 1730 – 23 December 1795) was a British Army officer and politician who sat in the House of Commons between 1772 and 1795. He is best known for his service as a general during the American War of Independence. He arrived in Boston in May 1775 and was the British Commander-in-Chief in America from 1778 to 1782. He was a Member of Parliament for many years due to the influence of his cousin Henry Pelham-Clinton, 2nd Duke of Newcastle. Late in life, he was named Governor of Gibraltar, but he died before assuming the post.
Dimensions of enamel: 2 ⅞” by 2 ¼”
Condition: Minor hairlines