Antique Tri Color gold fill/pinchbeck Victorian Cameo Necklace 16"

Beautiful I believe either pinchbeck or gold filled 16" tongue clasp necklace with a cameo. The necklace is in perfect condition, the cameo if you look really closely has a little chip out of the face. It is not noticeable when on, but with a loupe it is. Chain is 16" long, pendant part is 1 3/4" by 1 1/2". This is a piece I wore often. Feel free to ask questions. Thanks for looking!