A rare and fine pair of Chelsea porcelain Royal-blue ground and gilt castors and covers, from the Mecklenburg Strelitz service, finely painted with exotic birds and shrubs. English circa 1760, gold anchor marks. Provenance: From the celebrated service commissioned by King George III and Queen Charlotte and presented in 1764 to the Queens brother Adolphus Frederick IV Duke of Mecklenburg Strelitz (1738-1794), Mrs John Ravensky Sothebys New York 26 January 1957 lot 514. Albert Amor Ltd London. Robert Burke collection no 158. Exhibited: Albert Amor Ltd London Chelsea Porcelain A Private Collection Part Three Shape and Colour no 36. Reference:In the Royal Collection are 137 pieces from this service, presented to HM Queen Elizabeth II in 1947 by James Oakes to celebrate the Queens Silver Wedding Anniversary. 19 cm high, 8.5 cm diameter