Today we have the pin that is worn by the Hand of the King.
The Hand of the King is the most powerful appointed position in the Seven Kingdoms. The hand is second only to the King in authority and responsibility. The Hand is the King's closest advisor and can make decisions in the Kings name. The Hand lives in the Tower of the Hand. The Tower of the Hand is located in the Red Keep in Kings landing. The hand lives here with his household. The tower contains a dining room, a study, bedchambers, corridors and stairways.