Napoleon III" half set Brooch pendant, earrings Pearls, three 18k (750) golds and platinum (850) Borgnis Gallanty case - Mellerio successor Late 19th century Pendant length: approx. 4.8 cm - Brooch height: approx. 6.5 cm Weight : 43 g Additional information: The Borgnis-Gallanty jewellery house became close to the Mellerio house following the marriage, in the mid-19ᵉ century, of François Mellerio to the daughter of the Borgnis-Gallanty jewellers. From this union onwards, some pieces bear the words "Mellerio, successor to Borgnis-Gallanty".