• Helm of Untold Stories
• Heroic
• Item Level 346Disenchants into:
  [Dream Shard]: 1 (99.5%)
  [Abyss Crystal]: 1 (0.5%)
• Binds when picked up
  
• Plate
• Head
• 2680 Armor
• +454 Stamina
  +242 Intellect
  +162 Spirit
• Meta Socket
  Yellow Socket
• Socket Bonus: +30 Mastery Rating
• Durability 80 / 80
• Requires Level 85
• Equip: Increases mastery rating by 182.
• 
• Sell Price: 12 53 47

Source

This item drops from  Lord Godfrey in the Shadowfang Keep instance on heroic.

Patches and hotfixes

• Patch 4.0.3a (2010-11-23): Added. 
  

External links

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