Read from the World of Warcraft client build files.
How Obsidian Gladiator's Plate Plastron Compares
Who It Suits
Plate is the armor type Death Knight, Paladin and Warrior wear. With Strength or Intellect, Obsidian Gladiator's Plate Plastron suits Arms, Fury and Protection Warrior; Holy, Protection and Retribution Paladin; Blood, Frost and Unholy Death Knight.
Similar Items
The 2 items nearest to Obsidian Gladiator's Plate Plastron (item level 408) in item level among Armor > Plate, Chest slot, from item level 330 to 447.
Obsidian Gladiator's Plate Plastron is part of the transmog set Obsidian Gladiator's Plate Armor (Paladin only), which the Appearances collection lists in 3 versions. The other 16 pieces:
Items Numbered Next to Obsidian Gladiator's Plate Plastron
Blizzard numbers items as they are created, so the named items next to ID 205616 (205611 to 205621) were usually added in the same batch as Obsidian Gladiator's Plate Plastron: the same quest line, zone, vendor or reward set.