William Pitt The Younger Gilt Metal Portrait Profile Roundel, circa 1800.A William Pitt Gilt Metal Portrait Profile Roundel. The gilt metal medallion housed within a reeded and ebonised circular frame with convex glass, circa 1800. The medallion with a Greek key and reeded border. William Pitt the Younger (1759 1806) was a British statesman, the youngest and last Prime Minister of Great Britain from 1783 until the 1800 Acts of the Union and then first Prime Minister of the United Kingdon from 1801. He left office in March