Drop Dead Gorgeous Antique Hand Carved Shell Cameo Pin Pendant Rare Subject

Huge cameo and bezel is both a pendant and a pin. The shell is a little lose in the bezel but that is an easy fix. The piece is about 2 inches up and down. There are 2 women and an eagle... I have never seen this before and i have seen THOUSANDS of cameo subjects. I know it is some type of greek mythology but i dont know which it represents.