• Ancient Iron Heaume
• Item Level 226Disenchants into:
  [Abyss Crystal]: 1-2
• Binds when picked up
  
• Plate
• Head
• 1908 Armor
• +99 Stamina
  +81 Intellect
• Meta Socket
  Yellow Socket
• Socket Bonus: 3 mana per 5 sec
• Durability 100 / 100
• Requires Level 80
• Equip: Improves critical strike rating by 67.
  Equip: Improves haste rating by 60.
  Equip: Increases spell power by 115.
• Sell Price: 11 45 69

Source

This item drops from Assembly of Iron in the 25-man version of Ulduar.

Patch changes

• Patch 3.1.0 (14-Apr-2009): Added. 
  

External links

• Battle.net (EU)
• Wowhead
• Thottbot
• WoWDB