BISHOP'S MITRE, knight's helmet and shells

A Royal Coat of Arms finely carved in oval Cornelian :
Bishop’s Mitre above helmet, bearing
shield of Four Shells
Circa : 1700’s
Diameter of oval 2.3 x 2.0 cm
Overall length of fob :

Original Silver 17 - 18th century fob mount, the domed back behind the gem shows traces of gold which appear to be mercury gilding.
# 30037 c ….................................................................. $ 895.