Sarah Cov Victorian Revival Large Cameo Locket Necklace

From what I can see, this locket is attributed to Sarah Coventry. It is Greek / Victorian revival style from the 60’s. The cameo is plastic, and the metal casing is light. The chain is 18” with room for almost a 2” photo in each side. This necklace has wear that is consistent for its age from a smoke free home. This was my grandma’s and my sister and I wore it I. The 80’s and 90’s. It has sat in a drawer ever since.