Desecrated Belt

Desecrated Belt is a tier 3 armor token. It can be exchanged along with various items at various NPCs at Light's Hope Chapel for the following items:
 * Belt of Faith
 * Frostfire Belt
 * Plagueheart Belt

Source
This item dropped from Noth the Plaguebringer, Heigan the Unclean, and Gluth in the original version of Naxxramas.