This item is acquired in-game. See its sources below.
Appearance ID: 21454. 18 other items wear the same appearance; 11 of them are listed here.
Read from the World of Warcraft client build files.
Plate is the armor type Death Knight, Paladin and Warrior wear.
Bracers of Winged Triumph is part of the transmog set Vestments of Winged Triumph (Paladin only). The other 16 pieces:
Greaves of Winged Triumph
Mantle of Winged Triumph
Chestguard of Winged Triumph
Handguards of Winged Triumph
Faceguard of Winged TriumphLegguards of Winged TriumphShoulderguards of Winged TriumphPauldrons of Winged TriumphBreastplate of Winged TriumphGloves of Winged TriumphHeadguard of Winged TriumphBattleplate of Winged TriumphGauntlets of Winged TriumphHelmet of Winged TriumphLegplates of Winged TriumphBattleplate of Winged TriumphBuilt from the World of Warcraft client build files and recorded Auction House snapshots.
Bracers of Winged Triumph is not traded on the Auction House, so it has no Auction House price. It is acquired in-game from the sources listed above. This page collects its first-party game data (identity, effects and where it comes from) from the official World of Warcraft client build.
TheWoWDB