This quest is not available in game.
For 7 Insignias of the Dawn and 7 Insignias of the Crusade you may choose an item from the Argent Dawn's treasure cache.
Greetings, friend. Have you insignias of the Dawn or the Crusade that you would like to redeem for items of power?
Items offered to those revered amongst the Dawn are priced quite reasonably. I encourage you to make a purchase!