In Wrath of the Lich King it is item level 232, requires level 80 and is named Thassarian's Handguards. In MoP Classic it is item level 245, requires level 80 and sells to vendors for 1c.
In the Appearances collection, Thassarian's Handguards of Triumph is listed as Boss Drop. Appearance ID: 11791. 10 other items wear the same appearance:
Read from the World of Warcraft client build files (JournalEncounterItem, JournalEncounterCreature, Achievement) and the Blizzard Game Data quest API.
How Thassarian's Handguards of Triumph Compares
Who It Suits
Plate is the armor type Death Knight, Paladin and Warrior wear. With Strength or Intellect, Thassarian's Handguards of Triumph suits Arms, Fury and Protection Warrior; Holy, Protection and Retribution Paladin; Blood, Frost and Unholy Death Knight.
Transmog Sets
Thassarian's Handguards of Triumph is part of the transmog set Thassarian's Battlegear (Death Knight only). The other 16 pieces:
Built from the World of Warcraft client build files and recorded Auction House snapshots.
Where Thassarian's Handguards of Triumph Fits
Other Items Named Thassarian's Handguards of Triumph
1 other item in the current build is also called Thassarian's Handguards of Triumph. Same-name entries are usually a different rank, faction, quest stage or reward track of the same object.
Items Numbered Next to Thassarian's Handguards of Triumph
Blizzard numbers items as they are created, so the named items next to ID 48539 (48531 to 48544) were usually added in the same batch as Thassarian's Handguards of Triumph: the same quest line, zone, vendor or reward set.