Desecrated Sabatons

Desecrated Sabatons 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:
 * Dreadnaught Sabatons
 * Bonescythe Sabatons

Source
This item dropped from Instructor Razuvious, Gothik the Harvester, and Gluth in the original version of Naxxramas.