Delightful little repoussé treasure, very ornate design with roses on one and a shield which could be engraved with a monogrammed on the other.
It has hinges on one side and a clasp on the other. Inside there are tags which would hold a photograph or Saint's picture  
It is a silver coloured white metal with no hallmark. It has not been polished, to retain the patina but I think it would polish, as it did start to gleam when I cleaned it just with a soft cloth. 
measures a tiny 5cm x 3.5cm (just under 2" x 1.5") 

Antique silvered repoussé hinged boudoir treasure