Charles Le Bastier was one of the principal goldsmiths of both the Louis XV and Louis XVI periods. He obtained the maîtrise in 1754 and established his own shop on the rue Thévenot where he worked until his death in 1783. Clare Le Corbeiller writes 'His entire oeuvre is characterised by classical restraint, a spare use of ornament, and the frequent use of subtle - sometimes contrasting - enamel colours,' C. Le Corbeiller, European and American Snuff Boxes 1730-1830, London, 1966. The Louvre has thirteen gold boxes by this goldsmith, including an example dated 1767/1768 with similar decoration and contrasting pale green and royal blue enamel, see S. Grandjean, Les tabatières du musée du Louvre, Paris, 1981, p. 122, no. 139.
Frederich II was Landgrave of Hesse-Cassel from 1760 to 1785. He was born at Cassel in Hesse in 1720, the son of William VIII, Landgrave of Hesse-Cassel and his wife Dorothea Wilhelmine of Saxe-Zeitz, and succeeded his father as Landgrave in 1760. On 8 May 1740, by proxy at London, and on 28 June 1740 in person at Cassel, he married Princess Mary, daughter of King George II of Great Britain and Caroline of Ansbach. They had four sons: William, died young in 1742; William I, Elector of Hesse (1743 to 1721), Charles (1744 to 1836) and Frederich (1747-1837), father of Prince William of Hesse-Cassel and grandfather of Queen Louise of Denmark.
Their marriage, though was not a happy one, and by 1747 they were living apart and formally separated in 1755. Mary moved to Denmark the following year to care for the children of her late sister Louise of Great Britain who had died in 1751. All three of the couple's surviving children moved with Mary to Denmark. Two of them, including Frederich's heir William, later married Danish princesses, their first cousins. The younger sons lived permanently in Denmark and it was only William who returned to Germany upon inheriting the principality of Hanau. He also later succeeded Frederich as Landgrave of Hesse-Kassel. Mary died in 1772, and Frederich married Margravine Philippine, daughter of Frederick William, Margrave of Brandenburg-Schwedt and Sophia Dorethea of Prussia in 1773. Landgrave Frederich II died in 1785 at Castle Weibenstein, Cassel.