
Royal banner of Vakhtang VI, a King of Kartli
It depicts a scene from the Christianization of Georgia, it is showing King Mirian III standing over the Seamless robe of Jesus at the foundation of the Svetiskhoveli Cathedral.
Vakhtang VI was the King of Kartli from 1716-1724 (Kartli is in eastern Georgia).
In my opinion this is the best royal banner/standard I've ever seen from any kingdom