Emblem of Conquest

Emblem of Conquest was a currency used in Northrend to buy (item level 226 or tier 8) items, and can be traded in at a 1:1 ratio for 1 Emblem of Valor with  or.

Source
This item is no longer available as a drop. However, as all other tier Emblems, Emblem of Triumph can be downgraded to an Emblem of Conquest by visiting in the Underbelly of Dalaran or Arcanist Asarina in the Argent Tournament Grounds.

Vendors
Emblem of Conquest vendors can be found all over Dalaran in the various weapon and armor shops selling the appropriate armor for their location, as well as in the Alliance and Horde quarters of Dalaran:



Trivia

 * This particular badge name was folded over and used in the current PvP point system Conquest Points. Essentially being the PvP equivalent to Valor Points.