A PAIR OF ENGLISH PEARLWARE PLAQUES OF LOUIS XVI AND MARIE ANTOINETTE

See the pair illustrated in John and Griselda Lewis, Pratt Ware (Woodbridge 1984), p. 132, in which the design is attributed to a pair of Wedgwood jasper ware portrait medallions modelled by William Hackwood in 1778, after a pair of terracotta examples modelled in 1774 by Jean Baptiste Nini.