Regalia of the Grand Protector

Regalia of the Grand Protector is a tier 9 armor token. It can be exchanged at Champion Isimode or Champion Faesrol at the Argent Tournament Grounds for the Heroic versions of the following tier set pieces:
 * Wrynn's Battlegear/Hellscream's Battlegear
 * Windrunner's Battlegear/Windrunner's Pursuit
 * Nobundo's Battlegear/Thrall's Battlegear

Source
This item can be found in the Argent Crusade Tribute Chest after defeating Anub'arakin the 25-man version of Trial of the Grand Crusader.