.I will admit I do not know exactly what this piece is. It was purchased a number of years ago from an Australian. I am not sure if that is the original origin of the piece. It appears to be maybe glass or porcelain with a glaze on it? The subject is also a mystery. To me it looks like maybe it has some greek features, but the subject is wearing a string of pearls so I was thinking maybe it is more of a roaring 20's model. I just do not know. If you have info let me know and I will include it in this description. The setting is simple, probably brass. The pin a basic easy lock style catch, there is no rotating lock, but it was not made with one. You can see 3 small spots on the front. missing some of the brown finish there. I am going to guess on the age just ball park 100 years old. Modern safety clasps did not start being mass produced till the 1930's The profile itself is in excellent shape no scratches. Size is just shy of 1-3/4 tall. A unique piece. We will gift box for you.