Antique Edwardian authentic Gold-filled Round Photo Locket with Engraved

Product Name: Antique Edwardian authentic Gold-filled Round Photo Locket with Engraved
This authentic is an antique photo locket with the initials "M. B. A." on the front. On the inside, there are two photos, one faded and of a woman and the other of a man. There is some green tarnish on the inside. There is also a small amount of rubbing on the hinge that leads me to believe that the pendant is gold-filled. The front and back have been bent inwards some, but it does open and shut well. This has not been tested by a professional to confirm any gold-filling.