Read from the World of Warcraft client build files (JournalEncounterItem, JournalEncounterCreature, Achievement) and the Blizzard Game Data quest API.
Where Helm of the Cursed Vanquisher Fits
Other Items Named Helm of the Cursed Vanquisher
2 other items in the current build are also called Helm of the Cursed Vanquisher. Same-name entries are usually a different rank, faction, quest stage or reward track of the same object.
Items Numbered Next to Helm of the Cursed Vanquisher
Blizzard numbers items as they are created, so the named items next to ID 99671 (99666 to 99676) were usually added in the same batch as Helm of the Cursed Vanquisher: the same quest line, zone, vendor or reward set.