I believe this belonged to my grandmother, but I don't know its purpose. The paint inside has deteriorated, but the clasp closes properly. It's approximately 3.5 x 3.5 cm, and about 1.3 cm thick. It's old, but the decoration has few scratches and is beautiful. Please note that I am listing this from a PC, so the offer function is not available. Please understand that my replies may be delayed. m(__)m