• Greathelm of the Silver Hand
• Item Level 219Disenchants into:
  [Abyss Crystal]: 1-2
• Binds when picked up
  
• Plate
• Head
• 1886 Armor
• +86 Stamina
  +66 Intellect
• Meta Socket
  Red Socket
• Socket Bonus: +8 Intellect
• Durability 100 / 100
• Requires Level 80
• Equip: Improves critical strike rating by 48.
  Equip: Improves haste rating by 73.
  Equip: Increases spell power by 105.
• 
• Sell Price: 11 8 69

Source

This item can be found inside The Captain's Chest after escaping the Lich King in Halls of Reflection.

Patch changes

• Patch 3.3.0 (08-Dec-2009): Added. 
  

External links

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