The coats-of-arms are those of Les Grandes Armes de France et de Navarre, the monogram is that of Louis XV of France, le Bien-Aimè.
It is possible that this box was made at the time of the wedding by proxy in Paris of Louise-Elizabeth of France (1727-1759), eldest daughter of King Louis V of Spain and Don Philippe (1720-1765), the son of King Philippe V of Spain. Don Philippe's mother was Elizabeth Farnese, the last heir of the Dukes of Parma. This wedding itself was celebrated in Alaca, Spain, on 17 October 1739. It is possible that this seal-box contained the lead or wax seals attached to the wedding contract.
An almost identical seal box was sold at Christie's Geneva, 25 May 1993, lot 303. This box was stamped with the maker's mark of Claude Deharchies, Paris 1760.
Two similar Royal seal boxes are in the collection of The Musée Lorrain in Nancy.